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- Davey Electric Pool & Spa Heat Pumps
- Heat pump vacuum evaporators
- The 411 On Heat Pumps
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Water Purification Using Heat Pumps. Publisher: CRC Press. Date of Publication: 24 June The discount is only available for 'Alert of Favourite Topics' newsletter recipients.
Other Titles by F. A. Holland
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To preheat water for a chemical process — Most chemical processes are more effective when the chemical mixture is heated. This principle is used in almost all CIP clean-in-place processes. To size a heat exchanger for one of these applications, the vendor must know flow rates and temperatures of each fluid going through the exchanger.
He also needs to know size limitations, pressure drop limits, and contaminants that may foul the heat transfer surfaces. There are many other factors that influence the heat transfer calculation, such as tube size, viscosities of the liquids, thermal conductivity of the liquids, and potential fouling of the heat transfer surfaces by contaminants in the steam or water.
The complicated sizing process is typically done with a computer programmed for this specific function. The heat exchangers used for water purification processes are usually one of the types listed below:.
Davey Electric Pool & Spa Heat Pumps
The process liquid typically flows through the insides of the tubes, while the heating or cooling medium flows across the outside surfaces of the tubes. U-tube heat exchangers as shown in the image above are commonly used by Pureflow because they are an economical construction that works well with clean fluids on the inside and outside of the tubes. Most of the Pureflow shell and tube heat exchangers are ordered with tubes rolled tube ends expanded tight against the tubesheet hole by using a special roller tool and then welded to the tubesheets.
In sanitary construction the tube end welds are then ground and polished smooth.
Heat pump vacuum evaporators
The sanitary shell and tube exchangers used by Pureflow are typically double tube sheet designs, where one tube sheet seals the shell-side fluid inside the shell, and the other, separated from the first by an airgap, seals the tube-side fluid inside the bonnet. This insures that the two fluids cannot accidentally mix should a leak in a tube sheet joint occur. If the tube-side liquid is dirty and prone to fouling the tube-side surfaces, a straight tube heat exchanger is preferred.
This design has a bonnet or cap at each end, allowing full access to both ends of the exchanger. This allows for cleaning operations on each tube, such as rodding through with a brush, or spraying with high pressure water through a lance.
The 411 On Heat Pumps
A straight-tube heat exchanger with 2 passes of the tube-side liquid is shown to the right. Multiple tube-side passes are used when there is a limitation on length. Not in stock at Prospero.. Not in stock at Prospero. Add to basket. Add to wishlist.
What is wishlist? Mechanical Engineering Sciences Civil and construction engineering Environmental sciences. Short description: Water Purification Using Heat Pumps charts the development of heat pump technology from theoretical principles to the operation of practical systems for the purification of water. Long description: Water Purification Using Heat Pumps charts the development of heat pump technology from theoretical principles to the operation of practical systems for the purification of water.
Table of Contents: Water Purification Using Heat Pumps charts the development of heat pump technology from theoretical principles to the operation of practical systems for the purification of water.