analysis of the influences of solar radiation and façade glazing ...

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3.5 Optimization of a solar domestic hot water system 98 2 θ = −0. 0011t + 0, 3904t + 11, 749. (3.7) 2 θ = −0. 0012t + 0, 4409t + 11, 863. (3.8) In the authors’ opinion, this analytical form describing a physical process can be used in simplified, but at the same time accurate, modelling of thermal energy storage in solar conversion systems. Additionally, the capability of a solar collector installation for supporting the heating central system is verified. The graph, which is presented in Fig. 3.49, shows that the temperature of stored water increases to over 50°C between April and September. Unfortunately, the heating system is turned off at this period of the year. So, it can be concluded that the total designed area of solar collectors is too small for realizing this conception.
4.1 Summary 99 4 Summary and conclusions 4.1 Summary The duty of environmental protection and its sustainable development requires the design of energy-efficient buildings. Computer-based simulations play a very important role in this process. Additionally, this type of analysis can be useful in achieving thermal comfort in the occupied spaces. Three co-operative apartment houses, which are currently being built in Hannover, are the object of this dissertation. Each of the five storey buildings consists of nineteen apartments, a staircase and a storeroom for each home. The house envelope was designed for the optimal utilization of solar radiation energy during the heating season. A HVAC system of the considered buildings consists of mechanical ventilation, a heat recovery exchanger with its economizer controller and a combination of baseboard convective heaters and floor heating. In order to prove the hypothesis, three basic research methods were chosen. Firstly, detailed literature research was conducted to identify the current published knowledge concerning the impact of solar radiation on the thermal behavior of buildings. Computer simulation technique, which grows in popularity each year, was selected as the next investigation method. Additionally, experimental investigations were carried out to determine the thermal performance of the considered external wall and then for calibrating a building simulation software. The bibliographic review and state-of-the-art technology was focused on solar heat gain through windows, the simulation of building thermal behavior, the influence of the building envelope construction on energy consumption and modelling and designing solar domestic hot water systems. The detailed simulation method was chosen, as recommended in the literature, as the best tool for the research of active solar domestic hot water, heating, ventilation and air conditioning systems. Simultaneous modelling of building thermal behavior and the operation of plant and HVAC systems was employed by the author to approach simulation results with physical reality. The EnergyPlus V3-0, as the verified and fully validated tool, was chosen from a wide variety of simulation programs. This software with structured, modular code models combines heat and mass transfer, simulates multi-zone airflow and operates heating, cooling and ventilating systems in all kinds of buildings for long periods of time under varying conditions. First of all, a survey of problems concerned with the subject of the current dissertation in order to perform a more detailed and complex analysis of thermal behavior of buildings
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ANALYSIS OF THE INFLUENCES OF SOLAR
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than the inner air temperature. It
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4.1 SUMMARY .......................
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Subscripts σ - Stefan-Boltzmann co
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1.1 Introduction 9 Another problem,
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1.2 Background and literature revie
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2.1 Building energy simulation soft
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Page 47 and 48: 2.2 Experimental research methods 4
Page 53 and 54: 3.1 Building description 53 Fig. 3.
Page 55 and 56: 3.1 Building description 55 All int
Page 57 and 58: 3.1 Building description 57 Case B5
Page 59 and 60: 3.1 Building description 59 Of cour
Page 61 and 62: 3.1 Building description 61 Outside
Page 63 and 64: 3.1 Building description 63 In orde
Page 69 and 70: 3.2 Selection of the optimal glazin
Page 71 and 72: 3.3 Estimation of thermal energy ga
Page 79 and 80: 3.4 Testing of a building indoor en
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Page 91 and 92: 3.5 Optimization of a solar domesti
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Page 101 and 102: 4.2 Comments and conclusions 101 So
Page 103 and 104: 4.3 Future research 103 of the annu
Page 105 and 106: References 105 Beausoleil-Morrison,
Page 107 and 108: References 107 Hendron, R., et al.
Page 109 and 110: References 109 Rees, S. and Haves,
Page 111 and 112: References 111 Yohanis, Y.G., et al
Page 113 and 114: Appendix 1 113 Fig. A1.1 VASATI 2.0
Page 123 and 124: Appendix 2 123 !-Generator IDFEdito
Page 125 and 126: Appendix 2 125 0.035, !- Conductivi
Page 127 and 128: Appendix 2 127 , !- Zone Inside Con
Page 129 and 130: Appendix 2 129 Discrete; !- Numeric
Page 131 and 132: Appendix 2 131 Fraction, !- Schedul
Page 133 and 134: Appendix 2 133 Air Conditioner:Wind
Page 135 and 136: Appendix 2 135 , !- Sensible Heat F
Page 137 and 138: Appendix 2 137 281, !- Lighting Lev
Page 139 and 140: Appendix 2 139 OG2 InfilTRATION, !-
Page 141 and 142: Appendix 2 141 OG3, !- Zone Name 16
Page 143 and 144: Appendix 2 143 0.004, !- Zone Heati
Page 145 and 146: Appendix 2 145 Zone15WindACAirInlet
Page 147 and 148: Appendix 2 147 0, !- Maximum Flow R
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Appendix 2 149 Zone16WindACOAMixer,
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Appendix 2 151 Zone 9 Outlet Node;
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Appendix 2 153 Stand Alone ERV 16,
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Appendix 2 155 ZoneHVAC:WindowAirCo
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Appendix 2 157 ZoneHVAC:Baseboard:C
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Appendix 2 159 Zone Control Type Sc
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Appendix 2 161 WindACPLFFPLR, !- Pa
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Appendix 2 163 Stand Alone ERV Supp
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Appendix 2 165 0.03001, !- Maximum
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Appendix 2 167 0.81, !- Sensible Ef
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Appendix 2 169 !- == ALL OBJECTS IN
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