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The warning shows a cooling coil air outlet temperature of 1.43 C. The recurring warning at the end shows a minimum cooling coil air outlet temperature of 0.7 C. This is not all that far below 2 C show you should be able to adjust the coil performance. If you have room to adjust the performance, meaning you are not trying to model a specific cooling coil where you know rated air flow rate, rated SHR and total cooling capacity.

The first step is to know the air flow to capacity ratio of your cooling coil. Divide the rated air volume flow rate by total cooling capacity (12,000 W in your example). This should give you a number near 5E-5 m3/s/W. The allowed range for a DX cooling coil is 2.684E-5 (200 cfm/ton) to 6.713E-5 (500 cfm/tom). Adjusting this ratio can help raise the cooling coil outlet air temperature.

if you are autosizing then you can adjust the Sizing:Zone input for Zone Cooling Design Supply Air Temperature by decreasing that value slightly. This should increase the zone air flow rate needed to meet the zone load. Since the zone load doesn't change then the end result will be to increase the autosized air flow rate while, hopefully, maintaining nearly the same total cooling capacity.

If you are not autosizing then slightly increase the cooling coil air flow rate (without changing the cooling capacity) and the outlet temperature should rise. Or lowering the cooling coil total capacity (without changing air flow) should have the same affect.

This may be an iterative process so each time you make an adjustment look at the temperatures reported in the warnings to watch how they change. Make very small adjustments at first so you can still see the warning and therefore see how your change affected coil performance.

The warning shows a cooling coil air outlet temperature of 1.43 C. The recurring warning at the end shows a minimum cooling coil air outlet temperature of 0.7 C. This is not all that far below 2 C show so you should be able to adjust the coil performance. If you have room to adjust the performance, meaning you are not trying to model a specific cooling coil where you know rated air flow rate, rated SHR and total cooling capacity.capacity, then you should be able to make some minor adjustments.

The first step is to know the air flow to capacity ratio of your cooling coil. Divide the rated air volume flow rate by total cooling capacity (12,000 W in your example). This should give you a number near 5E-5 m3/s/W. The allowed range for a DX cooling coil is 2.684E-5 (200 cfm/ton) to 6.713E-5 (500 cfm/tom). Adjusting this ratio can help raise alter the cooling coil outlet air temperature.

if you are autosizing then you can adjust the Sizing:Zone input for Zone Cooling Design Supply Air Temperature by decreasing that value slightly. This should increase the zone air flow rate needed to meet the zone load. Since the zone load doesn't change then the end result will be to increase the autosized air flow rate while, hopefully, maintaining nearly the same total cooling capacity.

If you are not autosizing then slightly increase the cooling coil air flow rate (without changing the cooling capacity) and the outlet temperature should rise. Or lowering the cooling coil total capacity (without changing air flow) should have the same affect.

This may be an iterative process so each time you make an adjustment look at the temperatures reported in the warnings to watch how they change. Make very small adjustments at first so you can still see the warning and therefore see how your change affected coil performance.

The warning shows a cooling coil air outlet temperature of 1.43 C. The recurring warning at the end shows a minimum cooling coil air outlet temperature of 0.7 C. This is not all that far below 2 C so you should be able to adjust the coil performance. If you have room to adjust the performance, meaning you are not trying to model a specific cooling coil where you know rated air flow rate, rated SHR and total cooling capacity, then you should be able to make some minor adjustments.

The first step is to know the air flow to capacity ratio of your cooling coil. Divide the rated air volume flow rate by total cooling capacity (12,000 W BTU / 3.4129) in your example). This should give you a number near 5E-5 m3/s/W. The allowed range for a DX cooling coil is 2.684E-5 (200 cfm/ton) to 6.713E-5 (500 cfm/tom). Adjusting this ratio can alter the cooling coil outlet air temperature.

if you are autosizing then you can adjust the Sizing:Zone input for Zone Cooling Design Supply Air Temperature by decreasing that value slightly. This should increase the zone air flow rate needed to meet the zone load. Since the zone load doesn't change then the end result will be to increase the autosized air flow rate while, hopefully, maintaining nearly the same total cooling capacity.

If you are not autosizing then slightly increase the cooling coil air flow rate (without changing the cooling capacity) and the outlet temperature should rise. Or lowering the cooling coil total capacity (without changing air flow) should have the same affect.

This may be an iterative process so each time you make an adjustment look at the temperatures reported in the warnings to watch how they change. Make very small adjustments at first so you can still see the warning and therefore see how your change affected coil performance.

The warning shows a cooling coil air outlet temperature of 1.43 C. The recurring warning at the end shows a minimum cooling coil air outlet temperature of 0.7 C. This is not all that far below 2 C so you should be able to adjust the coil performance. If you have room to adjust the performance, meaning you are not trying to model a specific cooling coil where you know rated air flow rate, rated SHR and total cooling capacity, then you should be able to make some minor adjustments.

The first step is to know the air flow to capacity ratio of your cooling coil. Divide the rated air volume flow rate by total cooling capacity (12,000 BTU / 3.4129) 3.4129 in your example). This should give you a number near 5E-5 m3/s/W. The allowed range for a DX cooling coil is 2.684E-5 (200 cfm/ton) to 6.713E-5 (500 cfm/tom). Adjusting this ratio can alter the cooling coil outlet air temperature.

if you are autosizing then you can adjust the Sizing:Zone input for Zone Cooling Design Supply Air Temperature by decreasing that value slightly. This should increase the zone air flow rate needed to meet the zone load. Since the zone load doesn't change then the end result will be to increase the autosized air flow rate while, hopefully, maintaining nearly the same total cooling capacity.

If you are not autosizing then slightly increase the cooling coil air flow rate (without changing the cooling capacity) and the outlet temperature should rise. Or lowering the cooling coil total capacity (without changing air flow) should have the same affect.

This may be an iterative process so each time you make an adjustment look at the temperatures reported in the warnings to watch how they change. Make very small adjustments at first so you can still see the warning and therefore see how your change affected coil performance.

The warning shows a cooling coil air outlet temperature of 1.43 C. The recurring warning at the end shows a minimum cooling coil air outlet temperature of 0.7 C. This is not all that far below 2 C so you should be able to adjust the coil performance. If you have room to adjust the performance, meaning you are not trying to model a specific cooling coil where you know rated air flow rate, rated SHR and total cooling capacity, then you should be able to make some minor adjustments.

The first step is to know the air flow to capacity ratio of your cooling coil. Divide the rated air volume flow rate by total cooling capacity (12,000 BTU BTU/hr / 3.4129 in your example). This should give you a number near 5E-5 m3/s/W. The allowed range for a DX cooling coil is 2.684E-5 (200 cfm/ton) to 6.713E-5 (500 cfm/tom). Adjusting this ratio can alter the cooling coil outlet air temperature.

if you are autosizing then you can adjust the Sizing:Zone input for Zone Cooling Design Supply Air Temperature by decreasing that value slightly. This should increase the zone air flow rate needed to meet the zone load. Since the zone load doesn't change then the end result will be to increase the autosized air flow rate while, hopefully, maintaining nearly the same total cooling capacity.

If you are not autosizing then slightly increase the cooling coil air flow rate (without changing the cooling capacity) and the outlet temperature should rise. Or lowering the cooling coil total capacity (without changing air flow) should have the same affect.

This may be an iterative process so each time you make an adjustment look at the temperatures reported in the warnings to watch how they change. Make very small adjustments at first so you can still see the warning and therefore see how your change affected coil performance.