Heat Pump Dryers
Since good design is essential for the long-term reputation of the technology, Scanair shall be addressing ourselves as installers, manufacturers and consulting engineers. found solutions for drying applications with Low/High Temperature Process drying Heat Pump Dryers. There are several limitations associated with traditional sun drying. During periods of intermittent and particularly during continuous rainfall season, crop drying is not possible and the risks or crop losses are very high. Sun drying is slow and weather dependent compared to other alternative drying systems. Crop quality may be low due to contamination by dust, dirt, stones and insects, while direct crop losses from theft and livestock consumption can be high. Sun drying also suffers from a high labour requirement and excessive crop handling particularly in periods of inclement weather which can result in high costs, crop damage and a loss in quality.
Scanair found the solution to the heat pump dryer in the industry with National invention patent that has safety, environmental protection, high temperature refrigerant, high efficiency heat ex-changer, no pollution and the security and stability of the heat pump structure. Our high temperature capable of 80 ˚C, heat pump drying machine is mainly used for tobacco, leather, cloth, clothing, mosquito coils, mushroom, dehydrated vegetables, grains, fertilizer, pharmaceuticals, sludge, coal, lignite, wood drying etc,. The unit has high energy efficient, economical, safety and stability. General electric boilers oil fired boiler drying energy consumption from 1/4 to 1/3of consumption.
Scanair heat pump dryer is specifically designed for use in low temperature process drying applications. The unit can operate in temperatures up to 40˚C used in conjunction with a Scanair process drying PLC control panel to create the perfect drying environment for your product, and we manufacture a standard range that can operate at up to 70˚C which have also been used successfully in many process drying applications. Scanair designed fabricate walk in Drying Chamber/tray dryer/drying room/drying equipment according to the customer requirements. Elevated Temperature, Cold room with humidity control, heated room with humidity control etc,. Chamber with Hot / Cold / Dry / Wet with full digital control features.
Heat Pump Dryers Introduction
Heat pump dryer running cost just as 40% of oil dryer, 50% of coal burning boiler, 30% of electric boiler. Heat pump dehumidification drying method of the closed cycles saving cost no exhaust waste heat emissions, no noise pollution environmental protection. Scanair used multi flow refrigerant injection technique heat pump circulating heating & dehumidification, wider application of a dehumidifier in industrial drying, drying performance better than ordinary heat pump dehumidification drying energy saving 40% and above .Medium and low temperature drying method from15-50˚C/60˚C/80˚C,similar like nature drying. Drying process material no deformation, no cracking, no-discoloration, no deterioration, and no oxidation, thorough drying, after drying and dehydration, less loss of nutrients, the long storage period, more than any conventional drying equipment to more effectively protect the color of the dried material, smell taste, individual form and active ingredients.
Scanair drying room adopt closed type ductable circulating heating or cooling drying air for suitable inflammable and explosive materials, poisonous material, pungent odor of materials, easily oxidized material etc,. Installation and operation easily, just need connecting with drying chamber by dry air duct hose pipe and electrical plug and play method. Adopt international branded scroll technology compressor, heat ex-changer, fan motor, controllers, expansion valve etc., Many protections like phase protection, low and high volt protection, overload protection, high and low pressure protection elegant design, small dimension, intelligent controller etc, make sure heat pump dryer stable working.
Application of Heat Pumps in Cardamom Drying
This is a far the most important section in the process after the cardamom capsules washed with pure water the stalks will be removed. Soaking the cardamom capsules in 2-5% sodium bicarbonate for ten minutes improves colour retention. The inability to adequately dry the produce will at the very least slow down the whole process and possibly lead to mould growth any cardamom with even a trace of mould cannot be used for processing. The sale value of mould cardamom can be less than 50% the normal value. In extreme cases the whole crop can be lost. Green dried cardamom receives a premium quality in West Asia. so drying has to be done in such a way as to preserve the green colour. The drying temperature is 50°C. The present system involves allowing the humidity of the drying chamber to build up for 2 hours and then to bring the humidity down. It is thought the initial high humidity ‘cooks’ the cardamom and inactivates the enzymes that break down the chlorophyll. Also no light is allowed in the drying chamber.
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