Mathematical Analysis of Optimal Operating Conditions in Heating Systems

Table 3

Experimental data.

Number	Frequency	Flow Rate	Supply Water Temperature	Return Water Temperature	Indoor Temperature	Pump Inlet Pressure	Pump Outlet Pressure	Power Consumption
	Hz	m^3/h	°C	°C	°C	MPa	MPa	kWh
1	15.02	0.606	67.13	65.90	18.65	0.050	0.065	0.120
2	15.68	0.629	67.11	65.92	18.65	0.049	0.064	0.128
3	16.45	0.670	67.07	65.96	18.65	0.048	0.065	0.130
4	17.50	0.710	67.04	65.99	18.65	0.045	0.065	0.125
5	18.80	0.755	67.01	66.02	18.65	0.042	0.065	0.130
6	20.13	0.810	66.97	66.06	18.65	0.040	0.065	0.136
7	21.30	0.866	66.95	66.08	18.65	0.037	0.066	0.150
8	23.55	0.955	66.91	66.12	18.65	0.031	0.066	0.168
9	25.65	1.040	66.87	66.16	18.65	0.026	0.068	0.184
10	28.81	1.172	66.83	66.20	18.65	0.016	0.070	0.217
11	29.50	1.194	66.83	66.20	18.65	0.015	0.070	0.196
12	30.60	1.235	66.82	66.21	18.65	0.011	0.069	0.249
13	31.50	1.276	66.81	66.22	18.65	0.008	0.070	0.163
14	31.55	1.280	66.81	66.22	18.65	0.008	0.070	0.206
15	31.95	1.294	66.80	66.23	18.65	0.006	0.069	0.212
16	32.50	1.321	66.80	66.23	18.65	0.005	0.071	0.236
17	34.00	1.371	66.79	66.24	18.65	0.000	0.070	0.225