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Hi, Does anyone know which formula does EnergyPlus use for calculation of ground temperature? Does EnergyPlus even calculate the ground temperature, or simply uses the one from .epw files? Thank you for the reply.

Hi, Does anyone know which formula does EnergyPlus use for calculation of ground temperature? Does EnergyPlus even calculate the ground temperature, or simply uses the one from .epw files? Thank you for the reply.

Hi, Does anyone know which formula does EnergyPlus use for calculation of ground temperature? Does EnergyPlus even calculate the ground temperature, or simply uses the one from .epw files? Thank you for the reply.

EDITED:

Hi, Does anyone know which formula I am quite new to EnergyPlus, and have been using DOE up until now. I want to find out, how does EnergyPlus use for calculation of ground temperature? Does EnergyPlus even calculate the ground temperature, or simply Cold (inlet) water temperature? I googled a bit, and looks like the term EnergyPlus uses is: "Water Mains temperature" instead of "Cold water temperature". I found an equation for EnergyPlus 8.3 Water Mains temperature in here: http://bigladdersoftware.com/epx/docs/8-3/engineering-reference/water-systems.html

The thing that I am confused of, is lack of pipes depth input.

DOE2 uses the one from .epw files? following equation to calculate the Cold (inlet) water temperature ("Carslaw and Jaeger semi-infinite medium conduction equations"): www.energy.ca.gov/2013publications/CEC-400-2013-003/CEC-400-2013-003-CMF-REV.pdf#page=206

It has an input for both the pipes depth and soil type. It is also used to calculate the hourly cold water temperature while EnergyPlus one, seems to give only the daily value.

I would be very grateful for any clarification on this would.

Thank you for the reply.you.

EDITED on 10pm (UTC -5:00).

EDITED:

Hi, I am quite new to EnergyPlus, and have been using DOE up until now. I want to find out, how does EnergyPlus calculate the Cold (inlet) water temperature? I googled a bit, and looks like the term EnergyPlus uses is: "Water Mains temperature" instead of "Cold water temperature". I found an equation for EnergyPlus 8.3 Water Mains temperature in here: http://bigladdersoftware.com/epx/docs/8-3/engineering-reference/water-systems.html

The thing that I am confused of, is lack of pipes depth input.

DOE2 uses the following equation to calculate the Cold (inlet) water temperature ("Carslaw and Jaeger semi-infinite medium conduction equations"): www.energy.ca.gov/2013publications/CEC-400-2013-003/CEC-400-2013-003-CMF-REV.pdf#page=206

It has an input for both the pipes depth and soil type. It is also used to calculate the hourly cold water temperature while EnergyPlus one, seems to give only the daily value.

I would be very grateful for any clarification on this would.

Thank you.

EDITED on 10pm (UTC -5:00).

EDITED:

Hi, I am quite new to EnergyPlus, and have been using DOE up until now. I want to find out, how does EnergyPlus calculate the Cold (inlet) water temperature? I googled a bit, and looks like the term EnergyPlus uses is: "Water Mains temperature" instead of "Cold water temperature". I found an equation for EnergyPlus 8.3 Water Mains temperature in here: http://bigladdersoftware.com/epx/docs/8-3/engineering-reference/water-systems.html

The thing that I am confused of, is lack of pipes depth input.

DOE2 uses the following equation to calculate the Cold (inlet) water temperature ("Carslaw and Jaeger semi-infinite medium conduction equations"): www.energy.ca.gov/2013publications/CEC-400-2013-003/CEC-400-2013-003-CMF-REV.pdf#page=206

It has an input for both the pipes depth and soil type. It is also used to calculate the hourly cold water temperature while EnergyPlus one, seems to give only the daily value.

I would be very grateful for any clarification on this would.

Thank you.

EDITED on 10pm (UTC -5:00).