what's better to heat a pool, electric or gas heater?
402260
couple of choises. pool heater or a pool heat pump. or even a solar heater. try this link and see if any would work for you.\n\nhttp://www.swimmingpoolsetc.com/poolheaters.htm\nhttp://www.swimmingpoolsetc.com/pool-heat-pumps.htm\nhttp://www.swimmingpoolsetc.com/solar-heater-ig-pools.htm\nhttp://www.swimmingpoolsetc.com/solar-heater-ag-pools.htm
1127101
You can make Kerosene for fueling your heaters.........\nand roof patch and driveway sealer.............
131070
"2. Use less power - take a shower!\n\nSometimes a Myth, but sometimes True\nThe Government pushed this one heavily in the mid-1990s; I have a nice badge showing a dinosaur taking a shower. But in practice the answer is a lot more complex. The easiest way to test this out is to put the plug in the bath next time you have a shower, and see how much it fills up. If, at the end of the shower, there is less water than you would usually have in a bath, then you will probably save money by taking a shower. But it's not quite that simple... \n\nThe simple answer assumes that you are using the same source to heat water for the bath and the shower. This will be the case if you are using your central heating boiler or an immersion heater. But a lot of British homes have a "Power Shower" that uses electricity to provide a powerful and instant shower. Not only do they use water more quickly than a shower fed from a hot water system, they also use on-peak electricity that costs around 7p a unit, compared to 2p for gas. At this point it gets complicated, as to give a firm answer you would also need to know the efficiency of your heating boiler, the amount of insulation on the hot water tank and the losses on the pipework between the tank and your shower.\n\nIn fact, it may not make any difference either way, if you are using the central heating boiler to warm the water. For in most cases, especially in summer, we leave the boiler on for a fixed period of time, allowing it to heat up the tank of water. If the bath or shower is drawn off after the end of a water heating period, it will not affect the heating cost on the day it was used (for that has already happened) but on the next heating cycle. And if the tanks cools down then it will not be significantly affected by how much hot water was used after the previous cycle. "
531102
the main components that heat up are the ones that use more electricity under load, so basically everything =P\n\nok your CPU, your graphics processor, hard drives, and ram heat up badly under load, like with video games, or dvd rendering.  \n\nI liquid cool my machine, but on the family machine i have a HeatPipe style heatsink, and a good fan circulation system through the rest of the case.  also, and I am unsure of your skill level, a good thermal compound between the cpu and the heatsink/waterblock makes a big difference. \narctic silver is the best compound.  also make sure your computer is in a well ventilated area, the fan holes in the back arent blocked, and its not dusty in your case.  canned air will solve that if it is.\n\nalso getting round cables instead of ribbon cables helps move airflow.\ni think the best solution for the least money and least amount of work is the heatpipe.  usually you have to take your motherboard off, but you dont have to deal with water pumps and hoses inside your computer.
809029
First of all, what you are proposing is very dangerous. Doing this indoors will require a linked active exhaust fan and vent. In other words you can not turn on the gas without the vent fan operating and should the fan fail, the link would turn off the gas automatically - no if's, and's, or but's. Should the gas be on and the pretty dancing flame get put out, the next open flame or spark the gas finds turns the house into matchsticks. Second, your ring of fire will heat the glass with an excellent chance of breaking it depending on the size of the tank and thickness of the glass. You see, the glass under the water will remain cool while the glass above the water is allowed to heat up, now the glass becomes very stressed because of the differing expansion rates within the same piece of glass. This makes this a dumb idea even outside. You know what - I think I just talked myself out of telling you how to do this, sorry.
294656
there are variables that you must consider the heater, the insulation factor, the energy efficiency of the heater, climate where heater is etc. then is comes to estimates: say: a tank rates a 5.7 on the energy efficient rating chart and estimated costs of running it per year based on 8.41 cents per kW/H is $410. you need to look at water heater kilowatt rating either 12o/240 kWh then do the math
645770
What environment are you in?\n\nWind or hydro might be better options depending on local conditions. also depending on local skills and suppliers. see appropriate technology site
532973
No. In both, you have a blower, much of the power (volts x amps x power factor) for that is pushing air around, some of that power is lost in heat.\n\nIn a heater (furnace) most of the power goes to heating elements. The remainder goes to the blower motor.\n\nIn an air conditioner, you have the same blower that you have in the heater, you also have the compressor (using power). Like the blower, much of the compressor power is doing work (squashing a gas back to a fluid [once it move through the condenser]). The remainder is lost in heat. The condenser unit (outside of your house) has boat loads of heat radiating from it. This is partially the heat being removed from your house (the main function of the air conditioner).
249911
You wouldn't want a conductor for a heating coil, conductors aren't supposed to heat. You would want a resistor that would generate heat but still conduct the electricity needed. Nichrome Wire is generally considered the best and most common heating element.
52596
Solar water heaters are a very effecient way to reduce the heating cost of your water supply and your home temperature if the correct system is installed. Sunnier states provide a better benefit than those with long winters and cloudy skies but they will still operate effectively enough to be beneficial.  The typical cost of a small system is recovered in 4-12 years depending on the purchase price and locale.
2940
I used to work for PETRO the largest home heating oil company on the Eastern seaboard of USA....but I don't anymore, so my personal opinion is that electric is cheaper. The cost of home heating oil has gone up by about 2.5 times the price it was a year and a half ago! That's crazy!
1184183
The voltage needs to be slightly above the redox potential for splitting the water.  More current, not higher voltage, produces more gas.  However, you need more electrode surface area to increase the current.  For a given configuration, turning up the voltage will just make more heat and no greater amount of gas.
322538
It may depend on the source and use of heat.  An electric heater would heat the air locally permitting the air to hold more moisture while perhaps drying some surfaces, but would not remove any moisture.  An existing circulation air heating system placed into service by opening duct vents would supply new dry air forcing moist air to move on perhaps returning to the furnace.  The basement may be damp because moisture penetrates the walls (possibly through cracks).  Therefore a dehumidifier or a central heating system may perform equally well compared to an electric heater unless the electrically heated warmed air is free to leave the area (perhaps rising up the stairs?).
117198
This has been here for a while without answer.....\nSoft PVC is a plastic, and therefore would not be a good conductor of heat.
598430
Copper has a higher melting and boiling point and better electrical conductivity.\n\nIf you are a die caster, Zinc would be better because it can be easily pressure die-cast and hence better accuracy in the cast component with minimal metal removal for finishing.
87369
Generally speaking Natural Gas has been the cheapest for the past years. However now with the electric heat and air at 90% effeciency the centeral heating is the same cost to run as gas, and in some cases less with a well insulated home.  Energy for the stove is still less costly with gas. The Propain Gas costs more than Natural Gas. Heating Oil is a low cost now, but does not have the efficiency of the modern highly efficient electric heat pump centeral heat and air. Even cheeper is to put individual gas heaters in each bedroom and one in Living room and Kitchen. Zoning like this saves the most on home energy.Do not forget that summer will come and Air conditioning is needed aswell.Therefore a combined Airconditioning and heating system of high efficient electric is the best solution for modernization. Seperate gas heaters is the cheapest heat.
297024
Nichrome (Nickel Chrome) wire is one of the more common alloys used as a heating element wire.\n\nIn a way it is correct that the higher the resistance, the more heat that will be generated.  Looking at Ohm's law, V = I * R and P = I * V.   P being power, which in a resistor is exhibited as heat.  P = I^2  * R  or P = V^2 / R\n\nWhat this is saying is that while although more resistance will produce more heat, you will also need to increase the voltage (which will increase the current) to get that heat.  So, more resistance is not the simple answer, you need to match the resistance with your electrical supply capabilities to optimize the heat output.\n\nIt would probably would be better to figure that the more current flowing through the resistor, the more resulting heat you will get.\n\nAs far as wire goes, a smaller diameter wire will have a higher resistance, and will get hotter using less current.  A larger wire will have a lower resistance and require more current to get as hot as the smaller wire.  But, again referring back to Ohm's law, the overall heat exhibited will be the result of figuring the power output for the wire (voltage multiplied by current).  The larger wire will be capable of a higher power output before it surcumbs to the heat and melts because it can carry a higher current.\n\nFor the sake of comparison, let's say that we have a short piece of thin wire and a longer piece of thick wire.  Because of the difference in lengths, they will have the same resistance.  If they are both subjected to the same electrical power supply (same volts, same amps), they will both produce the SAME amount of heat.  The smaller wire will have a higher heat DENSITY because it needs to produce the same thermal energy over a smaller area.  It will appear hotter because of this.  But, if both were used to heat water, they would in theory do exactly the same thing.