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asked 2016-03-23 17:54:19 -0500

Yannis's avatar

Modeling a Standard Split AC with economizer

I followed the steps in the question "hvac template for standard split ac" to build up a standard split system according to the technical data: http://www.inventorairconditioner.com/air-conditioners/home/wall-mounted/mini-split-apsi-apso-24/

The only changes I made from the default are:

Unitary - Single Speed DX cooling - Cycling - Elec reheat

  • OS:AirLoopHVAC:UnitarySystem

Controlling Zone or thermostat location: Τhe relevant zone

  • OS:Coil:Cooling:DX:SingleSpeed

Rated Total Cooling Capacity: 6156 W

Rated COP: 3.24

  • OS:Coil:Heating:Electric

Nominal Capacity: 6498 W

Diffuser

  • OS:AirTerminal:SingleDuct:Uncontrolled

Maximum Air Flow Rate: 0.236 m3/s (Air Circulation 850 CMH Max)

My first question is if my settings are correct according to the technical data?

The second Question is according to openstudio results summary. Using a Unitary - Single Speed DX cooling - Cycling - Elec reheat system the total calculated power consumption for cooling or heating is cooling/heating+fans consumption?

The third question is if I can model an economizer, since the relevant zone is a IT room/Data center space and what are the appropriate settings for an economizer for such a space so as to estimate possible changes in energy consumption

Thanks!

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retagged

updated 2016-03-24 10:10:37 -0500

Neal Kruis's avatar

Modeling a Standard Split AC with economizer

I followed the steps in the question "hvac template for standard split ac" to build up a standard split system according to the technical data: http://www.inventorairconditioner.com/air-conditioners/home/wall-mounted/mini-split-apsi-apso-24/

The only changes I made from the default are:

Unitary - Single Speed DX cooling - Cycling - Elec reheat

  • OS:AirLoopHVAC:UnitarySystem

Controlling Zone or thermostat location: Τhe relevant zone

  • OS:Coil:Cooling:DX:SingleSpeed

Rated Total Cooling Capacity: 6156 W

Rated COP: 3.24

  • OS:Coil:Heating:Electric

Nominal Capacity: 6498 W

Diffuser

  • OS:AirTerminal:SingleDuct:Uncontrolled

Maximum Air Flow Rate: 0.236 m3/s (Air Circulation 850 CMH Max)

My first question is if my settings are correct according to the technical data?

The second Question is according to openstudio results summary. Using a Unitary - Single Speed DX cooling - Cycling - Elec reheat system the total calculated power consumption for cooling or heating is cooling/heating+fans consumption?

The third question is if I can model an economizer, since the relevant zone is a IT room/Data center space and what are the appropriate settings for an economizer for such a space so as to estimate possible changes in energy consumption

Thanks!

Modeling a Standard Split AC with economizer

I followed the steps in the question "hvac template for standard split ac" to build up a standard split system according to the technical data: http://www.inventorairconditioner.com/air-conditioners/home/wall-mounted/mini-split-apsi-apso-24/

The only changes I made from the default are:

Unitary - Single Speed DX cooling - Cycling - Elec reheat

  • OS:AirLoopHVAC:UnitarySystem

Controlling Zone or thermostat location: Τhe relevant zone

  • OS:Coil:Cooling:DX:SingleSpeed

Rated Total Cooling Capacity: 6156 W

Rated COP: 3.24

  • OS:Coil:Heating:Electric

Nominal Capacity: 6498 W

Diffuser

  • OS:AirTerminal:SingleDuct:Uncontrolled

Maximum Air Flow Rate: 0.236 m3/s (Air Circulation 850 CMH Max)

My first question is if my settings are correct according to the technical data?

The second Question is according to openstudio results summary. Using a Unitary - Single Speed DX cooling - Cycling - Elec reheat system the total calculated power consumption for cooling or heating is cooling/heating+fans consumption?

The third question is if I can model an economizer, since the relevant zone is a IT room/Data center space and what are the appropriate settings for an economizer for such a space so as to estimate possible changes in energy consumption

Thanks!

click to hide/show revision 4
retagged

updated 2016-03-27 06:42:12 -0500

__AmirRoth__'s avatar

Modeling a Standard Split AC with economizer

I followed the steps in the question "hvac template for standard split ac" to build up a standard split system according to the technical data: http://www.inventorairconditioner.com/air-conditioners/home/wall-mounted/mini-split-apsi-apso-24/

The only changes I made from the default are:

Unitary - Single Speed DX cooling - Cycling - Elec reheat

  • OS:AirLoopHVAC:UnitarySystem

Controlling Zone or thermostat location: Τhe relevant zone

  • OS:Coil:Cooling:DX:SingleSpeed

Rated Total Cooling Capacity: 6156 W

Rated COP: 3.24

  • OS:Coil:Heating:Electric

Nominal Capacity: 6498 W

Diffuser

  • OS:AirTerminal:SingleDuct:Uncontrolled

Maximum Air Flow Rate: 0.236 m3/s (Air Circulation 850 CMH Max)

My first question is if my settings are correct according to the technical data?

The second Question is according to openstudio results summary. Using a Unitary - Single Speed DX cooling - Cycling - Elec reheat system the total calculated power consumption for cooling or heating is cooling/heating+fans consumption?

The third question is if I can model an economizer, since the relevant zone is a IT room/Data center space and what are the appropriate settings for an economizer for such a space so as to estimate possible changes in energy consumption

Thanks!

Modeling a Standard Split AC with economizer

I followed the steps in the question "hvac template for standard split ac" to build up a standard split system according to the technical data: http://www.inventorairconditioner.com/air-conditioners/home/wall-mounted/mini-split-apsi-apso-24/

The only changes I made from the default are:

Unitary - Single Speed DX cooling - Cycling - Elec reheat

  • OS:AirLoopHVAC:UnitarySystem

Controlling Zone or thermostat location: Τhe relevant zone

  • OS:Coil:Cooling:DX:SingleSpeed

Rated Total Cooling Capacity: 6156 W

Rated COP: 3.24

  • OS:Coil:Heating:Electric

Nominal Capacity: 6498 W

Diffuser

  • OS:AirTerminal:SingleDuct:Uncontrolled

Maximum Air Flow Rate: 0.236 m3/s (Air Circulation 850 CMH Max)

My first question is if my settings are correct according to the technical data?

The second Question is according to openstudio results summary. Using a Unitary - Single Speed DX cooling - Cycling - Elec reheat system the total calculated power consumption for cooling or heating is cooling/heating+fans consumption?

The third question is if I can model an economizer, since the relevant zone is a IT room/Data center space and what are the appropriate settings for an economizer for such a space so as to estimate possible changes in energy consumption

Thanks!

EDIT-------------------------------------------------------------------

The following error occurs:

"Error: Sizing: Coil:Cooling:DX:SingleSpeed "1SPD DX CLG COIL 7": Rated air volume flow rate per watt of rated total cooling capacity is out of range. Min Rated Vol Flow Per Watt=[4.027E-005], Rated Vol Flow Per Watt=[8.196E-005], Max Rated Vol Flow Per Watt=[6.041E-005]. See Input Output Reference Manual for valid range."

When all set to default (autosize), no error occured. Acording to the technical data, is it posible to be overrided this error?

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