Please see attached file

Hello,

Can you give me more information about your needs? It  seems that you want to study something related with a geothermal heat pump. Is this true?

Do you know the configuration of the pipes in the soil ? Do you need a vertical  or a horizontal arrangement?

Thanks.

1) Are you seeking the equations for modeling heatpump and heat exchanger? 

2) Flow rate depends of heat pump you use. So check the technical data of heat pump for flow rate. 

3)  I am not sure what do you mean by equation for length of borehole. Can you explain your need in detail. 

As given by Prof. K.Sahraoui.

Hi

I need formulas to cover the length of the pipe,length of borehole, the vertical and horizontal positioning, the capacity of the heat pump, etc. based on the cooling and heating load of the building.

I need the steps to select the geothermal pump for the building.

Thanks

CALCULATION OF THE HEAT PUMP SYSTEM An example of calculation is performed for heat pump systems of exploitation of geothermal energy with the following rules:

1) For average-sized objects (186 – 223 m2) necessary thermal power is 10,6 kW to 11,4 kW, depending on climate conditions 2) Length of the pipe for vertical heat exchanger is 13 m/kW to 17 m/kW, and for the horizontal approximately 30% to 50% longer 3) Installation depth of the horizontal heat exchanger is from 1,2 m to 1,8 m

Hello,

I think that you can find some help in the attached fiile.

I must apologize for the delay of my answer.

Maria Rosa Duque