Solar assisted heat pump system with volume solar collector. Technical report

Technical Report · Fri Sep 01 00:00:00 EDT 1978

DOI:https://doi.org/10.2172/5496427· OSTI ID:5496427

Sabnis, J S; Hickox, W J; Drucker, E E; Ucar, M; LaGraff, J E

The system uses the attic of the house with a large south facing window as the solar collector. An air-to-water heat pump uses the attic air as a heat source to heat a volume of storage water during the heating season. During the cooling season the attic is ventilated and the heat pump uses the attic air as a heat sink while cooling the storage water. The computer program was developed to include a heat exchanger in the attic which could by-pass the heat pump condenser cooling water, thus permitting direct heat exchange between the attic air and the storage water whenever a favorable temperature existed. The program also accounts for the effect of the incidence angle of insolation and the effect of the number of glass plates on the transmittance and absorptance of the collector and windows. Other refinements include: the use of a sophisticated nighttime setback thermostat, account of internal heat generation and infiltration loss. Among all of the parameter variations, the use of an attic heat exchanger resulted in the maximum savings in the heating/cooling energy consumption of the house. The use of double-glazed windows too, resulted in substantial energy savings. The total energy consumption was found to depend strongly on the infiltration rate. The program was also used to simulate the same system under weather conditions existing at several different geographic areas.

• Research Organization: Syracuse Univ., NY (USA). Dept. of Mechanical and Aerospace Engineering
• DOE Contract Number: EY-76-S-02-2979
• OSTI ID: 5496427
• Report Number(s): COO-2979-3
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
AIR SOURCE HEAT PUMPS
COMPUTERIZED SIMULATION
PERFORMANCE
ATTICS
SOLAR SPACE HEATING
SOLAR-ASSISTED HEAT PUMPS
GLASS
HEAT EXCHANGERS
HOUSES
INCIDENCE ANGLE
OPTICAL PROPERTIES
SENSIBLE HEAT STORAGE
TANKS
THERMOSTATS
WINDOWS
AIR CONDITIONERS
APPLIANCES
BUILDINGS
CONTAINERS
CONTROL EQUIPMENT
ELECTRIC APPLIANCES
ENERGY STORAGE
EQUIPMENT
HEAT PUMPS
HEAT STORAGE
HEATING
HEATING SYSTEMS
OPENINGS
PHYSICAL PROPERTIES
RESIDENTIAL BUILDINGS
SIMULATION
SOLAR AIR CONDITIONERS
SOLAR COOLING SYSTEMS
SOLAR EQUIPMENT
SOLAR HEATING
SOLAR HEATING SYSTEMS
SPACE HEATING
STORAGE
140901* - Solar Thermal Utilization- Space Heating & Cooling