A TRNSYS/GROCS simulation of a horizontal coil ground-coupled heat pump

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · J. Sol. Energy Eng.; (United States)

DOI:https://doi.org/10.1115/1.3268091· OSTI ID:5197802

Conlin, F; Johnson, W S; Wix, S

The ground-coupled heat pump system in TECH House I at the University of Tennessee has been modelled using TRNSYS/GROCS and the results have been compared with actual performance data for both the 1982-1983 heating season and the 1983 cooling season. Hourly measurements of various ground temperatures, conditioned space temperatures, power requirements and heat transferred to or from the ground and the conditioned space were made. Results indicate that the model prediction is within 5 percent of the measured seasonal performance factor for both the summer and winter season. Parametric studies were undertaken to examine the effect of ground coil length, soil thermal conductivity, and the heat pump performance rating on the overall seasonal performance of the system. Overall performance is shown to increase with improved performance and increased soil thermal conductivity while the coil length shows an optimum value due to the increase of pumping power with length.

• Research Organization: Alternative Energy Corp., Research Triangle Park, NC
• OSTI ID: 5197802
• Journal Information: J. Sol. Energy Eng.; (United States), Journal Name: J. Sol. Energy Eng.; (United States) Vol. 108:3; ISSN JSEED
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320101* -- Energy Conservation
Consumption
& Utilization-- Residential Buildings-- (-1987)
BUILDINGS
COMPUTER CODES
COMPUTERIZED SIMULATION
COOLING LOAD
DATA ANALYSIS
DIMENSIONS
EDUCATIONAL FACILITIES
EFFICIENCY
ENERGY EFFICIENCY
ENERGY TRANSFER
G CODES
GROUND SOURCE HEAT PUMPS
HEAT PUMPS
HEAT TRANSFER
HEATING LOAD
HOURLY VARIATIONS
HOUSES
LENGTH
OPTIMIZATION
PERFORMANCE TESTING
PHYSICAL PROPERTIES
POWER DEMAND
PUMPING
RESIDENTIAL BUILDINGS
SEASONAL VARIATIONS
SIMULATION
SOILS
T CODES
TEMPERATURE MEASUREMENT
TEST FACILITIES
TESTING
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
VARIATIONS