IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at
IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at
IEA SHC Task 38 Monitoring Procedure The so called Eel,ref, is the electrical consumption of the conventional system which includes the consumption for operating the boiler and the pump between the boiler and the storage. This is the only item which differs from the electrical consumption of a SHDC in the heating mode. The electricity consumed by a conventional system in the cooling mode is taken into account in the SPF ref . In case the monitored system is based on a DEC AHU, the Eel,ref includes the electrical consumption of the corresponding AHU as described in subchapter 3.3.4. For conventional systems to be compared to SHDC systems: E = 0.02*(Q3a + Q3b + Q4 + Q el _ ref loss _ ref ) [ kWh ] elec Eq. 18 The value 0.02 kWhel/kWhth is an assumption to be taken into consideration for small boilers and in case no real value is available (low level of detail of monitoring). In a very detailed monitoring, one more calculation procedure has been defined as described later. The so-labeled Qcooling,ref is the cooling supplied to the load, (i.e. Q10a) and in a conventional system is entirely supplied by a compression chiller. In the 1 st monitoring level it is enough to monitor Q10a and assume a proper SPF which takes into account all the relevant electrical consumption, i.e., with reference to Figure 2-3, not only E12 but also E13 and E15, e.g. the default value of SPF ref . In a very detailed monitoring, one more calculation procedure has been defined to derive Qcooling,ref which is described later. At the end of the 1 st monitoring level one economic figure, the Cost Per kW, is calculated according to: Cost of total cooling system CPK = Cooling capacity installed ⎡ ⎢ ⎣ k€ kW ⎤ ⎥ ⎦ Eq. 19 3.3.2 General key energy performance figures in the 2 nd monitoring level In the second level mainly the quality of the subsystems solar thermal heat production and heat management within the system are evaluated. The necessary measurements only concern thermal flows (Table 6). Table 6 Necessary measurements for the completion of the second monitoring level 15 99% draft Version
IEA SHC Task 38 Monitoring Procedure Thermal Energies [kWh] solar irradiation on total collector aperture area solar thermal output to hot storage heat output from hot storage boiler thermal output (fossil) into storage renewable energy source (RES) thermal output into storage fossil boiler thermal input (fossil) bypassing hot storage (directly used) renewable heat source (RES) thermal input bypassing hot storage (directly used) space heating (SH) consumption space heating (SH) consumption (ventilation system) domestic hot water (DHW) consumption hot storage input to cooling machine (ACM) hot storage input to DEC-system (sorption regeneration) Label Q_sol Q1 Q1S Q2S_fossil Q2S_RES Q2D_fossil Q2D_RES Q3a Q3b Q4 Q6a Q6b First, the efficiency of solar collectors is estimated by means of: η coll , util = Q1 Qsol Eq. 20 Hence losses in the collectors are given by: ∆ Qsol = Qsol − Q1 [ ] kWh th Eq. 21 The solar energy collected per square meter of the collector: Qcoll _ yield Q1 Collector Aperture Area ⎡kWh ⎤ ⎢ ⎣ m ⎥ ⎦ = 2 Eq. 22 16 99% draft Version
- Page 71 and 72: IEA SHC Task 38 Solar Air Condition
- Page 73 and 74: IEA SHC Task 38 Solar Air Condition
- Page 75 and 76: IEA SHC Task 38 Solar Air Condition
- Page 77 and 78: IEA SHC Task 38 Solar Air Condition
- Page 79 and 80: IEA SHC Task 38 Solar Air Condition
- Page 81 and 82: Task 38 Solar Air-Conditioning and
- Page 83 and 84: IEA SHC Task 38 Solar Air Condition
- Page 85 and 86: IEA SHC Task 38 Solar Air Condition
- Page 87 and 88: IEA SHC Task 38 Solar Air Condition
- Page 89 and 90: IEA SHC Task 38 Solar Air Condition
- Page 91 and 92: IEA SHC Task 38 Solar Air Condition
- Page 93 and 94: IEA SHC Task 38 Solar Air Condition
- Page 95 and 96: IEA SHC Task 38 Solar Air Condition
- Page 97 and 98: IEA SHC Task 38 Solar Air Condition
- Page 99 and 100: IEA SHC Task 38 Solar Air Condition
- Page 101 and 102: M M IEA SHC Task 38 Solar Air Condi
- Page 103 and 104: M M M IEA SHC Task 38 Solar Air Con
- Page 105 and 106: IEA SHC Task 38 Monitoring Procedur
- Page 107 and 108: Table of tables Table 1 List of ele
- Page 109 and 110: IEA SHC Task 38 Monitoring Procedur
- Page 111 and 112: IEA SHC Task 38 Monitoring Procedur
- Page 113 and 114: IEA SHC Task 38 Monitoring Procedur
- Page 115 and 116: IEA SHC Task 38 Monitoring Procedur
- Page 117 and 118: IEA SHC Task 38 Monitoring Procedur
- Page 119 and 120: IEA SHC Task 38 Monitoring Procedur
- Page 121: IEA SHC Task 38 Monitoring Procedur
- Page 125 and 126: IEA SHC Task 38 Monitoring Procedur
- Page 127 and 128: IEA SHC Task 38 Monitoring Procedur
- Page 129 and 130: IEA SHC Task 38 Monitoring Procedur
- Page 131 and 132: IEA SHC Task 38 Monitoring Procedur
- Page 133 and 134: IEA SHC Task 38 Monitoring Procedur
- Page 135 and 136: IEA SHC Task 38 Monitoring Procedur
- Page 137 and 138: IEA SHC Task 38 Monitoring Procedur
- Page 139 and 140: IEA SHC Task 38 Monitoring Procedur
- Page 141 and 142: IEA SHC Task 38 Monitoring Procedur
- Page 143 and 144: Task 38 Solar Air-Conditioning and
- Page 145 and 146: IEA SHC Task 38 Solar Air Condition
- Page 147 and 148: IEA SHC Task 38 Solar Air Condition
- Page 149 and 150: IEA SHC Task 38 Solar Air Condition
- Page 151 and 152: IEA SHC Task 38 Solar Air Condition
- Page 153 and 154: IEA SHC Task 38 Solar Air Condition
- Page 155 and 156: IEA SHC Task 38 Solar Air Condition
- Page 157 and 158: IEA SHC Task 38 Solar Air Condition
- Page 159 and 160: IEA SHC Task 38 Solar Air Condition
- Page 161 and 162: IEA SHC Task 38 Solar Air Condition
- Page 163 and 164: IEA SHC Task 38 Solar Air Condition
- Page 165 and 166: IEA SHC Task 38 Solar Air Condition
- Page 167 and 168: IEA SHC Task 38 Solar Air Condition
- Page 169 and 170: IEA SHC Task 38 Solar Air Condition
- Page 171 and 172: IEA SHC Task 38 Solar Air Condition
<strong>IEA</strong> SHC Task 38<br />
Monitoring Procedure<br />
The so called Eel,ref, is the electrical consumption of the conventional system which<br />
includes the consumption for oper<strong>at</strong>ing the boiler <strong>and</strong> the pump between the boiler <strong>and</strong> the<br />
storage. This is the only item which differs from the electrical consumption of a SHDC in the<br />
he<strong>at</strong>ing mode. The electricity consumed by a conventional system in the cooling mode is<br />
taken into account in the SPF ref .<br />
In case the monitored system is based on a DEC AHU, the Eel,ref includes the electrical<br />
consumption of the corresponding AHU as described in subchapter 3.3.4.<br />
For conventional systems to be compared to SHDC systems:<br />
E = 0.02*(Q3a + Q3b + Q4 + Q<br />
el _ ref<br />
loss _ ref<br />
)<br />
[ kWh ]<br />
elec<br />
Eq. 18<br />
The value 0.02 kWhel/kWhth is an assumption to be taken into consider<strong>at</strong>ion for small<br />
boilers <strong>and</strong> in case no real value is available (low level of detail of monitoring). In a very<br />
detailed monitoring, one more calcul<strong>at</strong>ion procedure has been defined as described l<strong>at</strong>er.<br />
The so-labeled Qcooling,ref is the cooling supplied to the load, (i.e. Q10a) <strong>and</strong> in a<br />
conventional system is entirely supplied by a compression chiller. In the 1 st monitoring level it<br />
is enough to monitor Q10a <strong>and</strong> assume a proper SPF which takes into account all the<br />
relevant electrical consumption, i.e., with reference to Figure 2-3, not only E12 but also E13<br />
<strong>and</strong> E15, e.g. the default value of SPF ref . In a very detailed monitoring, one more calcul<strong>at</strong>ion<br />
procedure has been defined to derive Qcooling,ref which is described l<strong>at</strong>er.<br />
At the end of the 1 st monitoring level one economic figure, the Cost Per kW, is calcul<strong>at</strong>ed<br />
according to:<br />
Cost of total cooling system<br />
CPK =<br />
<strong>Cooling</strong> capacity installed<br />
⎡<br />
⎢<br />
⎣<br />
k€<br />
kW<br />
⎤<br />
⎥<br />
⎦<br />
Eq. 19<br />
3.3.2 General key energy performance figures in the 2 nd monitoring level<br />
In the second level mainly the quality of the subsystems solar thermal he<strong>at</strong> production <strong>and</strong><br />
he<strong>at</strong> management within the system are evalu<strong>at</strong>ed.<br />
The necessary measurements only concern thermal flows (Table 6).<br />
Table 6 Necessary measurements for the completion of the second monitoring level<br />
15 99% draft Version
Change language