Comparative performance of two types of evacuated tube solar collectors in a residential heating and cooling system. The progress report
Two types of evacuated tube solar collectors have been operated in space heating, cooling and domestic hot water heating systems in Colorado State University Solar House I. An experimental collector from Corning Glass Works supplied heat to the system from January 1977 through February 1978, and an experimental collector from Philips Research Laboratory, Aachen, which is currently in use, has been operating since August 1978. A flat absorber plate inside a single-walled glass tube is used in the Corning design, whereas heat is conducted through a single glass wall to an external heat exchanger plate in the Philips collector. In comparison with conventional flat-plate collectors, both types show reduced heat losses and improved efficiency. For space heating and hot water supply in winter, the solar delivery efficiency of the Corning collector ranged from 49% to 60% of the incident solar energy. The portion of the space heating and domestic hot water load carried by solar energy through fall and winter ranged from 50% to 74%, with a four-month contribution of 61% of the total requirements. Data on the Philips collector are currently being analyzed.
- Research Organization:
- Colorado State Univ., Fort Collins (USA)
- OSTI ID:
- 6033133
- Report Number(s):
- COO-2577-18; CONF-790541-52
- Country of Publication:
- United States
- Language:
- English
Similar Records
Performance of residential solar heating and cooling system with flat-plate and evacuated tubular collectors: CSU Solar House I
Performance of residential solar heating and cooling system with flat-plate and evacuated tubular collectors: CSU Solar House I
Related Subjects
140901 -- Solar Thermal Utilization-- Space Heating & Cooling
140907 -- Solar Thermal Utilization-- Water Heating
141000* -- Solar Collectors & Concentrators
AIR CONDITIONING
BUILDINGS
COMPARATIVE EVALUATIONS
DESIGN
EFFICIENCY
ENERGY LOSSES
EVACUATED COLLECTORS
EVACUATED TUBE COLLECTORS
HEAT LOSSES
HEATING
HOUSES
LOSSES
PERFORMANCE
RESIDENTIAL BUILDINGS
SOLAR AIR CONDITIONING
SOLAR COLLECTORS
SOLAR HEATING
SOLAR SPACE HEATING
SOLAR WATER HEATING
SPACE HEATING