Abstract
Computer software has been developed to control the operational conditions of a 283. 56 m**2 (3050 ft**2) water-cooled solar collector field consisting of a 161. 64 m**2 (1740 ft**2) line concentrating collector field and a 121. 92 m**2 (1310 ft**2) array of stationary vacuum tubes. The design operating conditions of both fields are 10. 3 bars (150 psia) at 171 degree C (340 degree F). Water at this condition is necessary to produce saturated vapor of Freon-113 at 145 degree C(293 degree F) in a separate heat exchanger which is supplied to a 10. 5 hp turbine of a Rankine engine system. The turbine drives the compressor of a 7. 5 ton vapor compression refrigeration system that provides half of the total cooling requirement of the Solar Laboratory at the University of Petroleum and Minerals. Because of varying solar intensities the state of water coming from the collector fields continually change. In order to have stability in the system it is thus necessary to circulate this water through a temperature control loop which consists of a storage tank, auxiliary boiler and 3-way solenoid valves. This paper deals with the control logic that has been developed.
| Original language | English |
|---|---|
| Pages (from-to) | 1-20 |
| Number of pages | 20 |
| Journal | Modelling, simulation & control. B |
| Volume | 12 |
| Issue number | 3 |
| State | Published - 1988 |
ASJC Scopus subject areas
- General Engineering
