8

summary: yes, and it has been done, and it needs to be big, to work detail: it's all about the volume. Rate of loss of ice will be proportional to surface area. Amount of ice is volume. So loss as a proportion of volume decreases, as volume increases. Which all goes to say, that for seasonal storage of heat or coolth, your store needs to be very large, and ...


5

Keeping your storm windows closed in the summer will result in net energy savings due to reduced ventilation. EDIT: model updated to eliminate cooling load during the winter. Using eQUEST, a building energy simulation software based on research from the U.S. Department of Energy, I built a simple model of a roughly 500 m2, two-story home with 15% glass on ...


5

Yes, the terms can refer to different things. There are two types of heat pumps (and A/C units in general). There are "air source" and "ground source." Ground source is often known as Geothermal and is much more efficient and sustainable. Air Exchange could refer to air source A/C (or heat pump) but that is not very likely. Air Exchange is much more likely ...


5

You have to also consider the climate where each type of cooler will be used and how each type of cooler works. Refrigeration coolers transfer heat from inside a building to the outside. However, the hotter the outside temperature the less effectively such coolers work. If the outside/atmospheric temperature is 50 C or higher, such coolers will struggle. ...


4

You certainly can use it as water to grow plants. But better not drinking it, since it can host bacteria in the long run. There is good stuff about it here: http://www.slate.com/articles/news_and_politics/explainer/2011/08/how_gross_is_the_water_that_drips_from_air_conditioners.html It can also be linked here in the site: someone thought about filtering it ...


4

There are some issues with this: Internally the drip catcher tray is exposed to the air currents running through the compressor. As such, it will have dust, pollen, and general crud -- Pretty much what you find on your swiffer. Sometimes these catch trays are designed cheaply, so the water doesn't drain until it gets to be 1/8 to 3/4" deep. So you ...


4

In general, one thing that is a huge factor is energy usage. Here in Indonesia central AC is not really used at all. Air conditioning is done room by room with wall-mounted split units (more units for large rooms than small ones). Coolant runs between the external component and the internal component. People don't build homes with central air in mind. ...


4

Most folks don't know that their 'frost free fridge' can be easily hacked to act as a dehumidifier. As it runs continuously, it can be used to suck unwanted moisture out of a humid home 24 hours a day. Frost free fridges actually have a heating element. This heating element comes on every-so-often to thaw out the cooling plate. Any frost/ice that has ...


3

If you can't re-insulate the whole house it might be possible to insulate just your room. Since you're already using an air conditioner the lack of effective thermal mass once you do that shouldn't matter much. But it depends on the extent that you're allowed to modify the house. What we are considering doing in our house is somewhere between building a new ...


3

The main disadvantage is that you are sucking the cold air out of the room. If the aircon currently runs continuously the room will get warmer, but if it gets to your target temperature and the thermostat switches it off, the vent will make that happen less often so your power bill will go up. How bad that is depends on how hot the replacement air is. The ...


3

Be aware it is not temperature only. If you fill the house up with water saturated air then you use electricity to condense the water out of the air when you turn the AC back on. Nominally you want air cooler than the thermostat and with a dew point of less than 55 Fahrenheit. If the air is 70 and the humidity is 62 it is not worth opening the windows for ...


3

This doesn't use a notifiction service, it just replaces a dumb system with a slightly smarter one. Ebay has lots of 20 buck gadgets that have a remote sensor and have a relay to control 5 to 15 A of current. Using one of these, you can keep the air conditioner off until outside temps exceed a certain value. The 'open windows' criteria is much harder. ...


3

A ground-source heat pump is not a form of geothermal energy at all. Geothermal: energy source is underground natural nuclear reactions; source temperature is over 50°C; Energy is extracted with passive heat exchangers. Ground-source heat pumps: energy source is solar radiation; source temperature is about the same as annual average air temperature; ...


3

A heat pump heats or cool your house by exploiting a cycle. For example to heat, it expands a gas to make that gas cold, then sends the gas through pipes outside to be warmed by the air or ground (the air may be much colder than your inside air, but the expansion trick has cooled the gas to colder than outside.) When it comes back in, warmer than it left, ...


2

I drive a 2015 Corolla. The most efficient way I figured to keep the car cool was to turn off the AC, turn the temperature to coolest, and just have the fan on. This setting gives enough cold air. Even with the AC off, we sometimes have to turn the vents away from us to not get too cold. It does takes a little longer to cool the car when starting, but then, ...


2

The effectiveness you are asking for is the end result of a heat exchanger analysis (of the level engineering schools assign in the junior year--somewhat complex). You would have to provide much more information to even be able to approach this problem. This web page demonstrates some of the equations needed to solve a problem like this: http://www.esru....


2

If you have a "climate control" system where you can set a temperature and let it do it's thing, it's probably best to let it do it's thing on auto ("auto eco" if it has such a setting). If you have more manual controls, then I'm guessing that the compressor uses the same amount of power regardless of how the other controls are set. On the basis that the ...


2

Beer factories in Germany used ice in cellars for their production throughout the year. A/C will require far more and may even heat up the cellars, so that more ice will be needed to bring them back to normal temperatures. During WW2 there were some ideas to build landing strips on ice built as composite of coconut matting with ice, being transported to ...


2

There's a bit of data in a paper titled A Review of Domestic Heat Pump Coefficient of Performance (by Dr Iain Staffell, Imperial College London, Centre for Environmental Policy, 2009-04) that you could selectively analyse to get a few numbers. His approach was to collate heat pumps with reported COPs and see how many °C they would boost the inlet air ...


2

In case you are open to other ideas, a fan with a cooling system behind it can be a cheaper and effective option. Something like following image (source google) can be made with little investment. There are simple version of the same. All images sourced from google.


2

To reduce the effect of the 2 cm gap under the door you could attach a door sweep. Any gaps around the air conditioning unit in the window can be sealed with silicone sealant. To reduce electricity consumption, ensure the air conditioner is the correct size/capacity for the room it is supposed to cool. An undersized unit will continuously operate and under ...


2

Here's a few things to try: Increase the temperature setting on the Air con Air conditioning units typically do two things: lower the ambient temperature, and remove humidity from the air. Depending on where you live the humidity can be a bigger factor in getting a good night's sleep than the temperature itself, as it exacerbates sweating and makes the air ...


2

One expert colleague of mine had heard of this in the past. Once. So it's not unknown. Another thought that it might not be that uncommon, but that it wouldn't be wise to buy one that hadn't passed a high, independent, certification standard Amongst the experts I talked to, there was scepticism about the paper core; the heat recovery rate (75%) ascribed to ...


2

The two main things that need to be considered are the power requirements of the air conditioner (in kW) and the power that each type of solar panel can provide. From that you can determine how many solar panels are required to operate a given air conditioner. The number of panels multiplied by the area of each panel will give the area required for that ...


2

One option is to place materials that absorb or adsorb water from the air into the house. Such materials include silica gel, clay and other mineral soils, and calcium chloride. The amount of water this materials can deal with likely makes them part of a solution, not a solution on their own. These materials may also need to be "recharged" or replaced ...


1

My high efficiency water heater has an electric damper. Conventional butterfly plate. The unit had a separate data sheet, so it wasn't part of the furnace itself. Try HVAC stores. Explain the problem. You may be able to find an off the wall solution. Failing that, you may be able just run an electric damper in parallel with the fan. There would be ...


1

Issue 1: Cold floor downstairs: Installing a few ceiling fans that kept the air near the floor moving would help a lot. Place area rugs where people's feet park helps a lot too. If the slab is insulated below, then removing the laminate floor, adding radiant heat tubing to the floor, and casting another inch of concrete may be the best, but more ...


1

You seem to be having issues with convection taking warm air upstairs, especially if you have extractors or vents taking air from upstairs bathrooms to the outside world. I have similar issues resulting in upstairs being too warm at the same time as downstairs is cooler than ideal if the heating has been on for some time, again in a well-insulated house. ...


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