For heating/cooling process of buildings and facilities, GSHPs are one of the promising technlogies. Using ground as a thermal reservoir due to its thermophysical properties makes GSHP more efficient and reliable among other heat pump technologies. Our team is focused on design and developing new generation GSHP to spread this technology all over our country.
Main targets of GSHP team are,
to develop more efficient systems for heating and cooling
to decrease the consumption of natural gas of the country
to decrease the emissions
to decrease the heating and cooling costs for the end users
Turkeys first domestic GSHP prototype has been developed for mass production by ITU and Baymak collaboration
Ground Heat Exchangers (GHeX)
For heating/cooling process of buildings and facilities, GSHPs are one of the promising technlogies. Using ground as a thermal reservoir due to its thermophysical properties makes GSHP more efficient and reliable among other heat pump technologies. Our team is focused on design and developing new generation GSHP to spread this technology all over our country.
Common GHeX types are regular, slinky, helix and borehole shown below
Thermal Response Test (TRT)
Before any engineering design for a GSHP system, thermal response test is a vital process to determine thermal properties of ground
and make long term performance predictions of GHeX. It is possible to reliably determine the amount of necessary GHeX if and only thermal
properties of ground are known. Depending on thermophysical properties of ground, design parameters of GHeX like depth (or length), number
and distances between GHeX can be calculated. Thermophysical properties of ground depends on the existence of underground water flows,
humidity, cracks and cavities in the ground. TRT becomes even an obligation for some European countries like Germany according to VDI4006 standards.
TRTs can be performed on any field with our mobile TRT vehicle in accordance with ASHRAE and IGSHPA standards.
The outputs of TRT are effective thermal conductivity and diffusivity of ground. Our computational models then allow us to determine
optimal number of boreholes or length of GHeX and allocation configuration by predicting long-term performance of GHeX.
Heat Pump COP Tests
Coefficient of performance (COP) is a key factor to compare heat pumps.In our GSHP Test and Research Laboratory,
a test bench is installed to measure COP values of both GSHP and WSHP with EN14511 & EHPA (European Heat Pump Association) standards.
Furthermore, in Thermal Test Laboratory, there are hot and cold rooms to simulate different conditions like thermal load,
ambient temperatures (from -20°C to +80°C) for common split A/C devices as ASHP. In addition to evaluating COP values
depend on external conditions, electrical and thermal strength tests are performed to determine the technical limits of ASHP.
