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cluster:178 [2019/08/27 14:09] hmeij07 [Summary Bullets] |
cluster:178 [2019/09/23 12:54] hmeij07 [Sept Meetings] |
⦁ ROI of 7-8 years\\ | ⦁ ROI of 7-8 years\\ |
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[[https://www.vertiv.com/en-us/support/tools-applications/free-cooling-economizer-calculator/|Vertiv Free Cooling Calculator]] 80 degree return air (conservative) with 70% load rates full free cooling hurs at 44% for Bridgeport and 48% for Hartford. So the expected 40% is low water mark as that percentage goes up if return ari gets hotter. At 85 degree it yields 53-56%. | [[https://www.vertiv.com/en-us/support/tools-applications/free-cooling-economizer-calculator/|Vertiv Free Cooling Calculator]] 80 degree return air (conservative) with 70% load rates full free cooling hours are at 44% for Bridgeport and 48% for Hartford. So the expected 40% lsted aboveis low water mark as that percentage goes up if return air gets hotter. At 85 degree it yields between 53-56%. |
===== Tech Summary ===== | ===== Tech Summary ===== |
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{{:cluster:pp-crac2-cold-aisle-small.jpg?nolink&300|}} Cold aisle looking at CRAC2\\ | {{:cluster:pp-crac2-cold-aisle-small.jpg?nolink&300|}} Cold aisle looking at CRAC2\\ |
{{:cluster:pp-crac1-small.jpg?nolink&300|}} Old CRAC1 removed, new frame installed\\ | {{:cluster:pp-crac1-small.jpg?nolink&300|}} Old CRAC1 removed, new frame installed\\ |
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| ===== Sept Meetings ===== |
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| **09/05** |
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| New electrician but critical work coming up\\ |
| Missing one track sensor\\ |
| CARC1 installed, piping finish and leak test\\ |
| New CRAC1 power up 9/19 by Liebert with owner training\\ |
| Duct work and dampers install today\\ |
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| **09/19** |
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| Cancelled |
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| ===== Sept Photos ===== |
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**[[cluster:0|Back]]** | **[[cluster:0|Back]]** |