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I installed three heat pumps by Mitsubishi, rated 24,000 Btu/h at 47F, Model MXZ-2C24NAHZ2, each with 2 heads, each with remote control; 2 in the living room, 1 in the kitchen, and 1 in each of 3 bedrooms.
The HPs have DC variable-speed, motor-driven compressors and fans, which improves the efficiency of low-temperature operation.
The HPs last about 15 years. Turnkey capital cost was $24,000…Continue
Posted on September 14, 2021 at 5:30pm — 11 Comments
RE folks often advocate wind and solar must provide at least 50% of the load of the NE grid.
This article provides an easy-to-understand analysis of what would be required for battery storage systems during multi-day wind/solar lulls
ISO-NE posts real-time data regarding grid operations, every few minutes, on a daily basis.
Go to fuel mix graph, click on rectangle with arrow, download the…Continue
Posted on August 25, 2021 at 10:30am — 5 Comments
Posted on August 7, 2021 at 8:32am — 2 Comments
Posted on July 12, 2021 at 11:30am — 4 Comments