DIY dehumidifier/air conditioner/heat pump water heater

NiHaoMike · 06-24-13, 07:56 PM

Just got the donor window A/C, a $100 Walmart special GE. The compressor is a Rechi, which is actually a pretty good unit. I went with a R410a unit since the compressors are designed for higher operating pressures, which means it won't be overstressed during the 140F "dishwashing" mode.

In it's stock configuration, it uses about 500W on high cool. In high fan, it uses 50W, which means the fan accounts for 10% of the total power usage! (That A/C is just begging for Cindy Wu or some other ECM drive...)

I ended up getting a Topsflo TS5 pump. Ð˜Ð½Ñ‚ÐµÑ€Ð½ÐµÑ‚-Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½ "Ð’Ð°Ñˆ Ð¡Ð¾Ð»Ð½ÐµÑ‡Ð½Ñ‹Ð¹ Ð”Ð¾Ð¼" - Ð°Ð²Ñ‚Ð¾Ð½Ð¾Ð¼Ð½Ñ‹Ðµ ÑÐ¸ÑÑ‚ÐµÐ¼Ñ‹ ÑÐ½ÐµÑ€Ð³Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ +7-499-7489064, +7-499-7489072 (That's probably not the exact one, just a similar one.) It appears to use some rather sophisticated ECM drive with a DSP. I'll do some testing once i get it.

Still deciding on the heat exchanger. The plate exchangers are surprisingly cost competitive compared to making some from copper tubing. I'll definitely need a filter to keep everything clean, I'll probably go with a whole house filter available from Home Depot.

06-24-13, 07:56 PM	#11
NiHaoMike Supreme EcoRenovator Join Date: Oct 2008 Location: Austin, TX Posts: 1,154 Thanks: 14 Thanked 257 Times in 241 Posts	Just got the donor window A/C, a $100 Walmart special GE. The compressor is a Rechi, which is actually a pretty good unit. I went with a R410a unit since the compressors are designed for higher operating pressures, which means it won't be overstressed during the 140F "dishwashing" mode. In it's stock configuration, it uses about 500W on high cool. In high fan, it uses 50W, which means the fan accounts for 10% of the total power usage! (That A/C is just begging for Cindy Wu or some other ECM drive...) I ended up getting a Topsflo TS5 pump. Ð˜Ð½Ñ‚ÐµÑ€Ð½ÐµÑ‚-Ð¼Ð°Ð³Ð°Ð·Ð¸Ð½ "Ð’Ð°Ñˆ Ð¡Ð¾Ð»Ð½ÐµÑ‡Ð½Ñ‹Ð¹ Ð”Ð¾Ð¼" - Ð°Ð²Ñ‚Ð¾Ð½Ð¾Ð¼Ð½Ñ‹Ðµ ÑÐ¸ÑÑ‚ÐµÐ¼Ñ‹ ÑÐ½ÐµÑ€Ð³Ð¾ÑÐ½Ð°Ð±Ð¶ÐµÐ½Ð¸Ñ +7-499-7489064, +7-499-7489072 (That's probably not the exact one, just a similar one.) It appears to use some rather sophisticated ECM drive with a DSP. I'll do some testing once i get it. Still deciding on the heat exchanger. The plate exchangers are surprisingly cost competitive compared to making some from copper tubing. I'll definitely need a filter to keep everything clean, I'll probably go with a whole house filter available from Home Depot. __________________ To my surprise, shortly after Naomi Wu gave me a bit of fame for making good use of solar power, Allie Moore got really jealous of her...