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cluster:178 [2019/08/26 15:29] hmeij07 [New design] |
cluster:178 [2019/10/14 12:52] hmeij07 [Sept Photos] |
⦁ 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 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-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:100_2396_small.jpg?nolink&300|}} 5-6 feet cold aisle \\ |
| {{:cluster:100_2402_small.jpg?nolink&300|}} Tour Guide on back of modular wall \\ |
| {{:cluster:100_2407_small.jpg?nolink&300|}} New CRAC1 pressurizing\\ |
| {{:cluster:100_2409_small.jpg?nolink&300|}} L-room return damper to hot aisle \\ |
| {{:cluster:100_2410_small.jpg?nolink&300|}} 1of2 L-Room cold air supply damper \\ |
| {{:cluster:100_2414_small.jpg?nolink&300|}} |
| {{:cluster:100_2416_small.jpg?nolink&300|}} Aiy. Drilling asbestos hot tiles \\ |
| {{:cluster:100_2420_small.jpg?nolink&300|}} 10/19 Startup delayed \\ |
| {{:cluster:100_2424_small.jpg?nolink&300|}} Cold aisle floor tile replacements\\ |
| {{:cluster:100_2430_small.jpg?nolink&300|}} Old CRAC3 removed, 9/13/2019 \\ |
| {{:cluster:100_2433_small.jpg?nolink&300|}} Circulation pumps inside Economizer \\ |
| {{:cluster:100_2449_small.jpg?nolink&300|}} New wall paint job. Thanks! \\ |
| {{:cluster:100_2451_small.jpg?nolink&300|}} Zeocryte cylinder flock \\ |
| {{:cluster:100_2456_small.jpg?nolink&300|}} |
| {{:cluster:100_2454_small.jpg?nolink&425|}} Old and new fans \\ |
| {{:cluster:100_2465_small.jpg?nolink&300|}} Vinyl doors and curtains, CRAC1 startup 10/10/2019 \\ |
| {{:cluster:100_2467_small.jpg?nolink&300|}} Top of racks vinyl curtain \\ |
| {{:cluster:100_2468_small.jpg?nolink&300|}} Ayi. More drilling into hot floor tiles \\ |
| {{:cluster:pp-crac2-vinyl-door.jpg?nolink&300|}} CRAC2 vinyl curtain and door \\ |
| {{:cluster:pp-hot-aisle-curtain-to-crac2.jpg?nolink&300|}} West hot aisle return to CRAC units \\ |
| {{:cluster:100_2473_small.jpg?nolink&300|}} U42 rack is 78 3/4" tall, door is 79" \\ |
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| ===== The End ===== |
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| Working with PP to see if we can do a floor tile cleaning. |
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| Scroll up for the whole story backwards. |
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**[[cluster:0|Back]]** | **[[cluster:0|Back]]** |