Claudia Bennett

Sunday, December 1, 2013

Geothermal Heat Pump Design

Geothermal heat pumps are considered ground source heat pumps (GSHPs) and they are electrically powered systems that tap the stored energy of the greatest solar collector in existence, the earth. These systems use the earth's relatively constant temperature to provide heating, cooling, and hot water for homes and for commercial buildings.A geothermal pump design consisting of ground source pump units are typically in the range of 20% to 40% more efficient than conventional air conditioning systems. If you are designing one of these systems in the northeast, more than likely you will need a second source of heat, such as a small boiler that will provide additional heat that will be required when the outdoor temperature drops below 30 degrees. This second source of heat will supplement the heat that is being provided by the geothermal heat pumps.There are two major piping systems in the overall design. One system called the earth coupling system is the outdoor piping system that is located below the surface of the earth. The other system is the indoor piping system that is connected to geothermal heat pump units that are located indoors. These indoor heat pumps provide either warm air for heating or cool air for cooling through a duct distribution system. The two piping systems are interconnected and both systems require circulating pumps.When the heat pumps are in the heating mode they extract the heat from the earth and transfer this heat to the air distribution system. When a geothermal heat pump is in the cooling mode they extract heat from the air distribution system by cooling the air and transfer this heat back to the earth through the underground piping system.There are two different types of piping loops. There is what is called the open piping loop similar to an open well where the water is exposed to the atmosphere, and there is the closed piping loop where the piping system is completely closed and not exposed to the atmosphere.For design in a closed loop, the outdoor underground piping can be located horizontally in trenches or vertically in what is called a bore hole. Horizontal piping requires more land and depending on the type of soil and rock formation can be expensive. Vertical piping typically is a 6" hole that is drilled into the ground with a special drill and the hole is usually 300 to 400 feet deep. An average size home may require anywhere between 2 and 4 bore holes. A commercial building will require many more bore holes.Many utility companies offer financial incentives for the installation of these geothermal systems to help offset the higher costs for these system compared to a more conventional air conditioning system. The federal government is also offering tax incentives for a geothermal heat pump design.A geothermal pump design is very reliable and will provide many years of efficient heating and air conditioning for your home or your office building.

For more information about geothermal heat pump design visit the website www.connecticutenergyconsultant.com

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Friday, August 31, 2012

Dunlop Aerogel 4D 500 Tour Tennis Racquet (100) (4 1/4)

Dunlop Aerogel 4D 500 Tour Tennis Racquet (100) (4 1/4) Description

The Dunlop Aerogel 4D 5Hundred Tour is the ideal racquet for players seeking a comfortable racquet with exceptional touch and feel, coupled with extra power and exceptional control. To compliment the raw power of Aerogel, Dunlop has strategically inserted 4D Braided touch points around the frame adding up to 33% more stability and control over previous Dunlop technologies.
4D Braided: 4D stands for 4 directional braiding. It is constructed using four braided fibers of superight S-glass fiber wrapped in an aluminum alloy sheath. The fibers are aligned at 0, 90, 22 and -22 degree orientations which enables stresses to be supported in multi directions whereas standard carbon sheets are only oriented in one direction. This means that one layer of 4D material has the equivalent properties to four layers of standard carbon laid up at four different orientations. 4D material is four times more effective than standard carbon. By using one layer, 4D is also softer and less bulky than 4 layers of carbon.
At 5 and 7 o'clock the multi-directional properties of the 4D braided cloth help stabilize the torsional twist at key points of the racquet providing enhanced stability and increased control. At 3 and 9 o'clock one layer of 4D braided cloth provides the torsional stability previously only achievable with several layers of carbon fiber. As a result of only one layer being used instead of several, this softer material also provides superb touch and feel at ball contact. Aerogel Technology: The world's lightest solid and has a strength of up to 4,000 its own weight.
Stiffness/RA: 71
Beam Width: 23/25/23.5 mm tapered
Composition/Construction: AeroGel 4D Braided Graphite
Power Level: Low - medium
Swing Speed: Fast
Grip Type: Hydramax Tour
String Pattern (mains x crosses): 16 x 18
Recommended Tension: 55 - 65 lbs.

Dunlop Aerogel 4D 500 Tour Tennis Racquet (100) (4 1/4) Feature

Headsize: 100 sq. in. / 645 sq. cm.
Length: 27 in. / 69 cm.
Strung Weight: 11.1 oz. / 315 g.
Balance: 330 mm / 3 pts. Head Light
RDN00123

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Wednesday, August 22, 2012

Troy-Bilt TB 672 208cc OHV Gas Powered Jet Sweep Walk Behind Wheeled Leaf Blower

Troy-Bilt TB 672 208cc OHV Gas Powered Jet Sweep Walk Behind Wheeled Leaf Blower Description

Features a 208cc OHV Troy Bilt Engine. 14-inch High Output Impeller, 90 Degree Chute Control with Semi-Pneumatic Wheels.

Troy-Bilt TB 672 208cc OHV Gas Powered Jet Sweep Walk Behind Wheeled Leaf Blower Feature

Front 8-inch by 2-inch rear 12-inch by 2-inch wheel size
90 Degree chute control, semi-pneumatic wheels
14-Inch high output
Blowing speeds up to 175-mph / 1150-cfm for maximum blowing power
Non-carb Compliant/Not For Sale In California

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Troy-Bilt TB 672 208cc OHV Gas Powered Jet Sweep Walk Behind Wheeled Leaf Blower prices and availability are accurate as of the date/time indicated and are subject to change. Any Troy-Bilt TB 672 208cc OHV Gas Powered Jet Sweep Walk Behind Wheeled Leaf Blower price and availability information displayed on [amazon.com or endless.com, as applicable] at the time of purchase will apply to the purchase of this product

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Tuesday, August 14, 2012

Koolscapes 530 GPH Pond Pump Kits

Koolscapes 530 GPH Pond Pump Kits Description

Energy efficient, submersible pond pump kit that can accommodate both a stream and create a fountain

Koolscapes 530 GPH Pond Pump Kits Feature

Assorted Fountain Heads
Flow Control Diverter
Magnetic Driven Motor
Double Daisy Fountain Head
3 Tier Fountain Head

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Koolscapes 530 GPH Pond Pump Kits prices and availability are accurate as of the date/time indicated and are subject to change. Any Koolscapes 530 GPH Pond Pump Kits price and availability information displayed on [amazon.com or endless.com, as applicable] at the time of purchase will apply to the purchase of this product

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