Need For Speed Heat - How To BOOST FPS, FIX STU... [UPDATED]
If you have a turbo, the short answer is no. In a turbocharged Subaru engine, the turbo does all the work. The amount of money it takes to build heads is not worth the insignificant gains you may receive, which can be easily achieved on the dyno by turning up the boost by 1lb. Aftermarket cams may give you a higher top-end power number, but you sacrifice power where you need and feel it in the low and mid ranges. These mods are better suited for an NA build.
Need for Speed Heat - How to BOOST FPS, FIX STU...
Great article. Acknowledges what we have known, and worked around for years here at Falmouth Solar, LLC on Cape Cod, MA. What really would be helpful would be some hard numbers, tested in my area. What output loss is experianced at what height / and roof temps for example. WE don't like the trend of the local installers here to put the array within a couple of inches of the roof, then put a sheet metal cover along the bottom row. How can heat convect? It's a nice look from the ground, but stupid from an engineers view. We don't install railess racking because we generally will even provide 1.5" between rows to further let the excess heat evaluate. This, as far as I know is an original thought, and I am unaware of any other installers doing it. Testing is needed to validate the effects of side skirts, row spacing, and height above roof for validation of our efforts, but a potential loss of 10-25% is HUGE in this industry, and generally ignored (except by the wise few reading this article!)
Think again about riding your bike. It takes less energy to maintain a comfortable biking speed than it does to get up to speed. The same concept applies to two-stage cooling. A two-stage heat pump or air conditioner may use 100% full capacity to reach your desired interior temperature, but then it may use part-capacity to maintain your setting as long as possible.
While full cooling capacity provides indoor comfort on the hottest days of the year, the extended operation at the part capacity helps maintain the indoor temperature for a longer period of time and dehumidifies the conditioned air in the process. With two-stage cooling, your air conditioner or heat pump may help you enjoy steady and consistent cooling when compared to the single-speed unit.
Your installation technician should confirm the size or BTUs required by performing a Manual J load calculation. This calculation evaluates the heating needs of your entire home by assessing square footage, number and location of windows, insulation values, and more. When it comes to gas furnaces, the only size that matters is the right size that provides indoor comfort on those cold winter nights!
Licensed contractors should perform a system sizing calculation using industry standard Air Conditioning Contractors of America (ACCA) Manual J. The calculation determines how much heat gets into the home from external sources and calculates the necessary tonnage of air conditioning is needed to effectively cool your homeThe sizing calculation is based a variety of site-specific information, including:
To get a better idea of how your air is heated or cooled, it helps to know a little bit about the parts that make up the heat pump system. A typical air-source heat pump system is a split or two-part system that uses electricity as its power source. The system contains an outdoor unit that looks similar to an air conditioner and an indoor air handler. The heat pump works in conjunction with the air handler to distribute the warm or cool air to interior spaces. In addition to the electrical components and a fan, a heat pump system includes: Compressor: Moves the refrigerant through the system. Some heat pumps contain a scroll compressor. When compared to a piston compressor, scroll compressors are quieter, have a longer lifespan, and provide 10 to 15F warmer air when in the heating mode.1Control board: Controls whether the heat pump system should be in cooling, heating or defrost mode. Coils: The condenser and evaporating coil heat or cool the air depending on the directional flow of refrigerant. Refrigerant: The substance in the refrigeration lines that circulates through the indoor and outdoor unit.Reversing valves: Change the flow of refrigerant which determines if your interior space is cooled or heated. Thermostatic expansion valves: Regulate the flow of refrigerant just like a faucet valve regulates the flow of water. The accumulator: A reservoir that adjusts the refrigerant charge depending on seasonal needs.Refrigeration lines and pipes: Connect the inside and outside equipment.Heat strips: An electric heat element is used for auxiliary heat. This added component is used to add additional heat on cold days or to recover from lower set back temperatures rapidly.Ducts: Serve as air tunnels to the various spaces inside your home.Thermostat or control system: Sets your desired temperature.
When your home needs moderate heating output, the heat pump reverses the refrigerant flow to provide warm air in your home and operates like a typical heat pump. In a dual fuel system, if the heating demand exceeds the preset heating capacity of the electric heat pump, the heat pump pauses, and the gas furnace takes over until the indoor temperature reaches the desired temperature on your thermostat or control system.1
When a dual fuel system's switch point can be determined by you or your dealer, the specific energy source pricing can be incorporated into the cost and efficiency equation. If switching from the heat pump to the gas furnace reduces the time required to get to your set temperature, your energy cost of operation may decrease, and your comfort level may increase. Although the electricity may cost less than the natural gas in some areas, it may cost you more if your heat pump has to operate longer to meet your indoor temperature needs.
Variable speed technology refers to the type of compressor in your air conditioner or heat pump. The compressor is the heart of your air conditioning or heat pump system. It creates the cooling capacity for your system. Variable speed compressors allow a unit to run at virtually any speed between 30% and 100%.
Homes that were part of the new construction boom in the late 1990s and early 2000s may have their original heating and cooling systems. These aging systems may be inefficient and/or in need of constant repairs. If this sounds like your HVAC system, you may want to consider adding a new high-efficiency heating and cooling system to your home improvement list.
For example, HVAC equipment with variable speed fans automatically adjusts the amount of heated or cooled air blown through the vents into your indoor spaces. It gently ramps up or down according to heating or cooling demand, minimizing the uncomfortable temperature peaks and valleys often found with the ON/OFF cycle of a single-speed unit. When your interior spaces reach the pre-set temperature on the thermostat or HVAC control system, the lower speed may maintain that set temperature longer than if the system turns off. This allows for steady, consistent comfort in your home.
Smart technology is meant to simplify our lives. While home heating and cooling equipment has typically been designed with the latest technology available, there was never a need for smart communication - that was left to the thermostat or control system. But as consumer behavior changes and home automation becomes more ingrained into our lifestyles, particular heating and cooling equipment manufacturers are responding!
Energy-efficient features, such as variable speed fans, variable speed compressors, and heat exchanger technology have also ushered in a new era of HVAC equipment. Not only do these features offer the benefits of increased energy efficiency when compared to some older or base models, but they may also help keep your budget in check and greatly improve your overall comfort level in your home.
For example, HVAC equipment with variable speed fans automatically adjusts the amount of heated or cooled air blown through the vents into your indoor spaces. A system with this option gently ramps up or down according to heating or cooling demand, minimizing the temperature peaks and valleys often found with the ON/OFF cycle of a single-speed unit. When your interior spaces reach the pre-set temperature on the thermostat or HVAC control system, the lower speed fan may maintain that set temperature longer than if the system turns off. This allows for steady comfort in your home.
Variable Speed: Variable speed compressor technology allows the unit to run at the speed that best meets your comfort needs coupled with energy-efficient operation. A variable speed air conditioner or heat pump is designed and engineered specifically to provide the output needed at the lowest consumption of power.
While extended run times can be beneficial with a two-stage or variable speed unit, single-stage air conditioners should cycle ON and OFF as demand requires. If you find that your single-stage air conditioner or heat pump is experiencing extended run times in comparison to normal operation, it may be a signal to contact your local licensed professional HVAC dealer for a system evaluation.
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