Stato dell'arte energetica degli edifici - Automatica - Università degli ...

More documents

Recommendations

Info

SIMEA Stato dell’arte energetica degli edifici 1.2.8. BLAST 20 Doc.No 20100610.SIMEA.MR.03 Versione 1 The Building Loads Analysis and System Thermodynamics (BLAST) tool is a comprehensive set of programs for predicting energy consumption and energy system performance and cost in buildings. The BLAST program was developed by the U.S. Army Construction Engineering Research Laboratory (USA CERL) and the University of Illinois. BLAST contains three major subprograms: Space Loads Prediction, Air System Simulation, and Central Plant. The Space Loads Prediction subprogram computes hourly space loads in a building based on weather data and user inputs detailing the building construction and operation. The heart of space loads prediction is the room heat balance. For each hour simulated, BLAST performs a heat balance for each surface of each zone described and a heat balance on the room air. The Air System Simulation subprogram uses the computed space loads, weather data, and user inputs describing the building air-handling system to calculate hot water, steam, gas, chilled water, and electric demands of the building and air- handling system. Once zone loads are calculated, they are translated into hot water, steam, chilled water, gas, and electrical demands on a central plant or utility system. This is done by using basic heat and mass balance principles in the system simulation subprogram of BLAST. Once the hot water, steam, chilled water, gas, and electrical demands of the building fan systems are known, the central plant must be simulated to determine the building's final purchased electrical power and/or fuel consumption. The Central Plant Simulation subprogram uses weather data, results of the air distribution system simulation, and user inputs describing the central plant to simulate boilers, chillers, on-site power generating equipment and solar energy systems; it computes monthly and annual fuel and electrical power consumption. BLAST can be used to investigate the energy performance of new or retrofit building design options of almost any type and size. In addition to performing peak load (design day) calculations necessary for mechanical equipment design, BLAST also estimates the annual energy performance of the facility, which is essential for the design of solar and total energy (cogeneration) systems and for determining compliance with design energy budgets. BLAST is no longer under development and no new versions have been released since 1998. 1.2.8.1. Expertise Required High level of computer literacy not required; engineering background helpful for analysis of air handling systems. 1.2.8.2. Users Over 500. 1.2.8.3. Audience Mechanical, energy, and architectural engineers working for architect/engineer firms, consulting firms, utilities, federal agencies, research universities, and research laboratories. 1.2.8.4. Input Building geometry, thermal characteristics, internal loads and schedules, heating and cooling equipment and system characteristics. Readable structured, input file may be generated by either the BTEXT program or the Drawing Navigator Program, which allows the user to generate a BLAST input file from AutoCad and Microstation building representations.
SIMEA Stato dell’arte energetica degli edifici 1.2.8.5. Output 21 Doc.No 20100610.SIMEA.MR.03 Versione 1 More than 50 user-selected, formatted reports printed directly by BLAST; also the REPORT WRITER program can generate tables or spreadsheet-ready files for over one hundred BLAST variables. 1.2.8.6. Computer Platform PC-compatible, 386 or higher; HP/Apollo. Source code is available and has been successfully compiled on most UNIX workstations. 1.2.8.7. Programming Language FORTRAN 1.2.8.8. Strengths PC format has structured interface; detailed heat balance algorithms allow for analysis of thermal comfort, passive solar structures, high and low intensity radiant heat, moisture, and variable heat transfer coefficients -- none of which can be analyzed in programs with less rigorous zone models; code modularity lends itself to research versions of the program, such as integrated BLAST (IBLAST) and integrated BLAST with modular systems (IBLAST-M). 1.2.8.9. Weaknesses High level of expertise required to develop custom system and plant models.
Page 1 and 2: Progetto SIMEA: Sistema Integrato/d
Page 3 and 4: SIMEA Stato dell’arte energetica
Page 19: SIMEA Stato dell’arte energetica
Page 71 and 72:
SIMEA Stato dell’arte energetica
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200:
Page 201 and 202:
Page 203 and 204:
Page 205 and 206:
Page 207 and 208:
Page 209 and 210:
Page 211 and 212:
Page 213 and 214:
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
Page 221 and 222:
Page 223 and 224:
Page 225 and 226:
Page 227 and 228:
Page 229 and 230:
show all

Stato dell'arte energetica degli edifici - Automatica - Università degli ...

Create successful ePaper yourself

Delete template?

Save as template?