POTENTIAL SPACE-HEATING ENERGY EFFICIENCY IMPROVEMENTS IN DISTRICT-HEATED RUSSIAN APARTMENT BUILDINGS by Michael W. Opitz B.S., Mechanical Engineering University of Oklahoma, 1991 Submitted to the Technology and Policy Program and the Department of Mechanical Engineering in Partial Fulfillment of the Requirements for the Degrees of Master of Science in Technology and Policy and Master of Science in Mechanical Engineering at the Massachusetts Institute of Technology May 1994 © 1994 Michael W. Opitz. All rights reserved. The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electronic copies of this thesis document in whole or in part. Signature of Author ......... .. vv...-......................... ..................... Certified by ........ ...... .............. r-. . ......................... Leslie K. Nor ford Associate Professor of Building Technology Thesis Advisor Certified by ........................ ... ................. ......... Leon R. Glicksman Professor of Building Technology and Mechanical Engineering Thesis Reader Accepted by........................... : :r../ ...... -.. - .................. R.i ... -'".` 'fil(cid:127)ý , hnology and Policy Program Accepted by.......................................... ........ ......... Ain A. Sonin Chairman, Mechanical Engineering Departmental Committee on Graduate Students [ 'MASACHUSE. 'hikSTI OACFH' (cid:127)!nOLOJF'F(cid:127)J ...A.UG. O,,1 ,.f941 POTENTIAL SPACE-HEATING ENERGY EFFICIENCY IMPROVEMENTS IN DISTRICT-HEATED RUSSIAN APARTMENT BUILDINGS by Michael W. Opitz Submitted to the Technology and Policy Program and the Department of Mechanical Engineering in Partial Fulfillment of the Requirements for the Degrees of Master of Science in Technology and Policy and Master of Science in Mechanical Engineering ABSTRACT Moscow's stock of apartment buildings was analyzed as a case study for assessing potential energy savings from space-heating energy efficiency improvements in district-heated Russian apartment buildings. The analysis focused on three key areas: identifying end-use energy savings in a single building, identifying the corresponding primary fuel savings, and extrapolating savings from a single building to other buildings. End-use savings were determined by analyzing the results of a Russian field experiment, and by surveying the characteristics of apartment building thermal envelopes. Primary savings and extrapolated savings were determined by examining the characteristics of heating equipment in three domains: apartment buildings, the district-heating distribution system, and central heat stations. Space-heating energy efficiency in Moscow's buildings was found to be poor compared to apartment buildings in the US. Improving the control of heat delivered to Russian apartment buildings offers the largest and most easily achieved energy savings--an estimated 12-14% of seasonal end-use space-heating energy could be saved in Moscow's apartment buildings by improving heating control systems. Control improvements are also required in order to save any energy through thermal envelope improvements. Diversity in Russian apartment buildings and district heating system designs was found to be substantial. As a result, many district heating systems will be unable to save fuel in response to lower space-heating energy requirements in buildings because of impediments in either the distribution network or the central heat stations. Further, extrapolations of end-use savings from a single building to other buildings should be limited to a narrow group of similar buildings in a single city, and extrapolations of primary fuel savings from a single building to other buildings should be limited to buildings connected to similar kinds of district heating systems. The systemic view--examining system characteristics from the points of energy service back to the points of primary fuel consumption-is critical in assessing energy savings in Russian apartment buildings. Future efforts at designing conservation programs in the Russian urban housing sector must also adopt a systemic view in order to be most effective. Since the best energy-saving strategies are largely defined by the quality of estimates of energy savings, retrofit cost, and retrofit feasibility, the results of this analysis could aid in the design of such strategies. Thesis Advisor: Leslie K. Norford, Associate Professor To the truth-seekers of the world, who may, from time to time, lose themselves in a jungle of misleading perceptions, confused motivations, and conflicting values, this work is dedicated. Don't give up! TABLE OF CONTENTS ABSTRACT.., ........................................................................................................................................................................... .... .................................... ....... ................. ................5......... ................. ................................................................ DEDICATION. LIST OF FIGURES.............. ................................. ......... ... (cid:127).. (cid:127).............................. .................................................................. LIST OF TABLES ............... ........................................................................................................................................... ACKNOWI.ED GEMENTS, ---------------------------------------- ---- ............. .... CHAPTER I: INTRODUCTION ............................. I.... ......... ....................... ................... ..... ......... ............................ Natural Resources, Energy, and Externalitic .................................................................. Energy Efficiency ............................................ ............ ....................................................... . Energy in the Commonwealth of Independent S··.................................................................................... Description of Thesis....................... ......... ............................................................................................... CHAPTER IL SOVIET HOUSING AND ENERGY POLICY..................................................................................28 The Soviet Economic Sstem..................................................................................................................................29 Central Planning................... .............................................................. ...2.9. R esource A llocation ................ .......................................................................................................... 31 D esign N orm s ............................... ........................................................... .............................................. 32 Inc entiveasn d Soviet F......... ........................... .......................................................................... ........................ 32 Incentives and Soviet Firm s................................................................................................................... 33 E on mi c R estructuring.......................................................................... ......................................... Data Problems..................... ............................................................................................................. The Housing Sector ............................... Economic Policy................... ................................... ..... .................................. 36 Quality .................................... ....... ....... ..(cid:127)............. ......................... ....................... . (cid:127)..(cid:127)3..9.......... Ownership and Control......... I............................................................................................................... The Housing Stock ............... ........................................................ .......................................................... W The Energy Sector... ............. ............ ........................................................................................... Energy Supply Problems....................... Energy Prices ........................................ .............. ..................................................................... .......46 Planned Conservation Efforts .............. ... .......... ....................................................... ........................... Structure of the Energy Sector ........... ........................................................................................... Energy Efficiency of the CIS Economy, ,·-· ro · · ·r·N · ·.· · · U ·· · N · · °(cid:127)' (cid:127) -(cid:127)· ···· o····o························· Summary . .....................I........................ ........ ................... ................................................................... ...... CHAPTER III: THERMAL CHARACTERISTICS OF RUSSIAN APARTMENT BUILDINGS ................................................................................ 57 Heating Buildings......................... ........... ..................................................................................................... 58 The Building Environment.................................... . ............................................... ............. 58 Hot Water Heating Systems ................................................................................... 59 The Russian Climate ................ ................................................................................................................ .. .... 62 Design Temperatures .................................................................... ..... .. 63 Russian Apartment Buildings ....................................... 64 6...... Building Characteristics ......... ........... ................................................................ 6 Evolution of Russian Building Codes .................................................................................. 80 The District-Heated Housing Stocks of Moscow, Russia, and the CIS............................93 System Design and Actual Conditions.......................................................................................... 00 Organization of the MFB Construction Industry ............................................. ........ .. 102 Sum ma ry .................................................................................................................................................................. 104 CHAPTER IV: THERMAL CHARACTERISTICS OF RUSSIAN DISTRICT HEATING SYSTEMS ..................................................................................................... 107 District Heating Systems................. ............ ............................................................................................. 107 Existing DH Systems ................................................ ...................... ............ ...................... ................ 109 Cogeneration .............................................................................................................................. 109 Central Plants .......................................................................................................................................... 110 Distribution Systems ..................................... .................... ...................... 11 3 Russian District Heating Systems .... .................... ...................................................... ..... 115 System Configuration........................................................... ............. . ...... 116 System Operation .................................................................................. .................. ............ 26.... Technical Impediments to Energy Savings..................................................................................................... 133 The Distribution System ...................... ................................................. . ....... 134 Central Heating Plants ...................................... . .... .................................. 137 Institutional Impediments to Energy Savings .............. 14.............................................................................140 Summary .................................................................................................................................................................. 142 CHAPTER V: POTENTIAL END-USE ENERGY SAVINGS IN A MOSCOW APARTMENT BUILDING ................................................................. 143 Description of the Test Building ........................................................... .. . . . . 143 Calculated Energy C sumptio ......................................................................... ................................ 145 Measured Energy Conusumption ............................................1.5.0............................................. Comparing Calculated and Measured Energy Consumption.......................................................154 Potential Energy Savings. ...................................... .............................................................................1..5.9....... Improving Space-Heating System Controls ............................. ...... .... ..........165 Summary . ......................... .......................... .....................16.8..................... CHAPTER VI: CONCLUSION ............................................... .....................................1 71 The Current state of Building Heating Systems ........................................................................ 172 The Evolution of the Russian Apartment Building Stock.........................................................172 Heating System Effectiveness............................................................................................ ............... 173 Energy Efficiency .................................................................................................................................. 175 Potential Improvements in Building Heating Systems............................................. .. ....... 176 Potential End-Use Energy Savings .. . ...... .................... .......... ..... 176 Diversity in District-Heated Russian Apartment Buildings .. ....................................... 176 The Most Promising Areas for Efficiency Improvements ...................... . .. 180 Last Word........................................................................................................................................ 180 1...... APPEN DIX A .............................. ................................................................................................................................. 183 APPENDIX B ..................................................................... ......................................................... .................... 184 APPEN D IX C .............................................. ......................................................................................................... 118899................ 192.............................................................................. APPENDIX D ............................................................................... 192 1"6 R-~--Ec-r FE RE `NCE r S .Lr .. ............................................................................................................................................. v· LIST OF FIGURES Figure 1.1: World Primary Energy Consumption ..................................................................................... 17 Figure 1.2: Distribution of Proven World Energy Reserves, 1991 ............................ Figure 1.3: Structure of Primary Energy Use in the CIS in 1985 ..... ............ 21 Figure 1.4: Residential Space-Heating Energy Intensity, 1985.......................................................22 Figure 1.5: Living Area per Capita, 1985 ........................ ..................................................... Figure 1.6: Conceptualization of the District Heating Energy Provision System...............................................25 Figure 2.1: The Former Soviet Union ........ ... ......... ...................... .............................. .28 Figure 2.2: USSR Population .................. ..................................................................................................... 35 Figure 2.3: Housing Stocks ................ ................................................................................................................. 37 Figure 2.4: Structure of USSR Housing Stock ................................................................................... .43 Figure 2.5: Structure of Russia's Urban Housing Stoc k................ ................................................ ................44 Figure 2.6: Intersection of Three Subsectors of the CIS Energy Economy........................................................50 Figure 3.1: Disposition of Heat Supplied to District-Heated Russian Apartment Buildings......................60 Figure 32: Pipe Layouts in Centralized Heating Systems.........................................................................................61 Figure 3.3: Diagram of Building Jet Pump ......................... .................................................69 Figure 3.4: Two Kinds of Block Construction. ........................................................................................................ 73 Figure 3.5: Two Large Panel Designs ................................................................................................. 73 Figure 3.6: Cross-Sections of Four Large-Panel Wall Sections................................................................................. 75 Figure 3.7: Two Building Assembly Methods .............................................................................. Figure 3.8: The CIS Apartment Building and District-Heated Buildings Sectors.......................................... .......94 Figure 3.9: Main Types of Wall Construction Used in New Apartment Buildings in the USSR.............95 Figure 3.10: Common Heights of New Apartment Buildings in the USSR ..................................................... 96 Figure 3.11: Structure of New Apartment Building Construction in Moscow, by area............................... 97 Figure 3.12: Estimated Structure of Moscow's District-Heated MFB Stock in 1992................................. 98 Figure 3.13: Estimated Structure of New MFBs in the USSR, by area........................................99 Figure 3.14: Estimated Structure of the USSR's District-Heated MFB Stock in 1989 ..............................99 Figure4.1: The District Heating Concep. .......................................................................................................................... 107 Figure 4.2: Typical Load Curves for Electricity or Heal .............................................................................................. 112 Figure 4.3: Layout of a Condensing ITOC Station on the Regenerative Rankine Cycle ...............................113 Figure 4.4: Direct and Indirect District Heating Distribution Networks.............................................. 115 Figure 4.5: Layout of a Typical Russian District Heating Distribution Network.......................... .... 122 Figure 4.6: Two Possible Open DHW Systems, with Dependent Space-Heating Connection....................123 Figure 4.7: A Closed DHW System (mixed design shown) with Independent Space-Heating Connection .................................................. 124 Figure 4.8: District-Heating Supply Water Temperature Schedules for Minsk ............. ............... ...1..2.8 Figure 4.9: Heat Savings Transmission through DH Distribution Networks ................ .......... 135 Figure 4.10: Heat Savings Transmission through TETs....................... ................................ 138 Figure 5.1: Plan View of the P44 Test Building ........................................................................................ 144 Figure 52: Calculated Structure of P44 Heating Loads, baseline case................................ .... ..... 149 Figure 5.3: Calculated Sensitivities of Model Parameters, baseline case with com santitT = 18 OC .................................................................. ............................................................ 150 Figure 5.4: Results of NIISF Experiment on P44 .......................... .................................................................... 152 Figure 5.5: Bin-Sorted Results of NIISF Experiment on P44.............................................................................153 Figure 5.6: Measured and Calculated Heating Loads, baseline case ....................................... ........ 154 Figure 5.7: Measured and Calculated Heating Loads, measured indoor temperatures ............................ ... 155 Figure 5.8: Sensitivities of P44's Heating Loads .................................................................................................... 158 Figure 5.9: Revised Potential End-Use Heating Energy Savings in the P44 Experimental Building ................................................................................................. .............. 160 Figure 5.10: Estimates of Potential End-Use Heating Energy Savings in Moscow's k ocf oPt4S 4 -Series s .............................. -
Description: