Re: Home heat pump

Posted by Angle Iron on March 23, 2017 at 06:05:44 from (73.131.52.171):

In Reply to: Home heat pump posted by sandel on March 21, 2017 at 19:58:15:

Quoting Removed, click Modern View to seeMore than likely you have a variable speed indoor fan motor and they do start slow and ramp up over a brief start time. You may also have a unit that is a two stage as in the compressor or compressors change in capacity as the need changes. Trane used a twin compressor system where as capacity needs changed as in indoor and out door temps the compressors changed. If I recall one shut down and the other took over. Carrier on the other hand used the same compressor that reversed direction to go from the lower to higher capacity. The beauty in this type set up is it allows a higher capacity unit to be installed in a cooling setting giving added cooling for the occasional large gathering in your home. It also gives a larger unit for heat as the out door temps fall so does the btu output of a heat pump. The last data I read if I recall stated a 36,000 btu heat pump was only able to produce at about 24,000 btu range at 27 degree out door temps. The lower the outdoor temp the less btu's generated. They pick up heat from the out door temp and transfer it indoors. Systems are generally designed and sized more on the AC side with the heat relying on an alternate heat source to make up the difference. This is in reference to air to air systems. The water source units on the other hand at least the ones I have seen have no alternate heat source as they remain able to produce at rated capacity regardless of out door temps. That is based on an open well system that has a dead stable water temp. If closed loop wells or a trenched based surface closed loop system is used that loop temp changes as the season progresses. The longer and colder the season the cooler the loop temps. The reverse is true of the heating cycle. It in reality banks the heat or cold in the surrounding material. You start the heating cycle with warmer loop temps and as the colder temps come the cooler the loop becomes. Same in reverse for cooling. These swings are not huge but do take place. The cost of larger or more loops keep them at the absolute minimum average need. I believe its a false economy type reasoning. Heat pumps have come a long way from 40 years ago and are used in northern temps not workable then. Having said all that I still prefer gas heat and the unit we gave has a variable speed fan that is very quiet, rarely hear it come on.

Replies:

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Optional Video Title: Optional Video URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.   Advanced Posting Tools   Upload Photo  Select Gallery Photo  Attach Serial # List  Return to Post

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]