Vacuum drying process reduces the pressure while drying. To allow water to evaporate at low temperature meat products reduces the thermal energy used in drying. [1] The product from drying vacuum color, smell and taste benefits similar to fresh products. Since the enzyme that causes the color and taste change can not happen. The low temperature drying. Low oxygen content and did not take long Compared with conventional hot air drying. [2 However even a vacuum drying the product will evaporate at low temperatures. However in practice to shorten the drying time it also requires a heat source to the heat source as used in vacuum drying a variety of forms such as wire electrical heating. Microwave, infrared, steam and heat pumps. [3] But the form which has advantages and disadvantages of different sources for example heat from the infrared. Which was being used to heat the dryers are preferred. Because infrared radiation can penetrate into the material. The water molecules in the material to vibrate and generate heat. This will result in a temperature higher than the temperature at the surface of the material. The external surface of the drying material is wrinkled. And remain the property of the product as close to the material to be dried. [4]
In addition, heat from the infrared source. To provide heat quickly. And distributes heat evenly, easy installation, energy saving and reduce the time for drying. [5] and the heat from the heat pump. The device that is used to heat the dryers vacuum. Because there are several advantages to having the ability to save energy. You can use the thermal energy in the form of heat exposure and heat. Can reduce the humidity of the air used in the drying downward. [6] As a result, can be dried under low temperature for drying products that are sensitive to heat. [7] In addition, the cooling coil of the heat pump can also be recycled to other benefits, such as building cooling system and the cooling system pump vacuum.
In the vacuum drying system It uses a vacuum pump to pull air out of the drying chamber to the vacuum pump and used to be a Liquid ring vacuum pumps to use cold water for cooling. So the system has to be device that cold running water. The cooler is equipped with performance Besides cold water The cooling water pump vacuum and then some will be exchanged in a cool dry or condensed moisture from the drying product. But cold water provides waste heat to drain well this is a loss. The researchers examined previous studies, researchers found no one studied the waste heat of the water cooling system to be used in vacuum drying. This research thus waste heat of water chiller system with infrared vacuum drying by studying the efficiency of drying infrared vacuum dryer and waste heat of water chiller system with infrared vacuum drying. Then compare the energy use of drying infrared vacuum dryer and waste heat of water chiller system with infrared vacuum drying.
กระบวนการอบแห้งช่วยลดความดันในขณะแห้ง ให้น้ำระเหยที่อุณหภูมิต่ำเนื้อผลิตภัณฑ์ช่วยลดพลังงานความร้อนที่ใช้ในการอบแห้ง [1] ผลิตภัณฑ์จากแห้งดูดสี กลิ่น และรสชาติผลประโยชน์เหมือนกับอาหารสด ตั้งแต่เอนไซม์ ที่ทำให้เกิดสี และรสชาติเปลี่ยนแปลงสามารถเกิดขึ้นได้ไม่ อุณหภูมิต่ำสุดที่แห้ง เนื้อหาออกซิเจนต่ำ และไม่นานเมื่อเทียบกับอากาศร้อนแบบแห้ง [2 อย่างไรก็ตามแม้จะเป็นการอบแห้งผลิตภัณฑ์จะระเหยที่อุณหภูมิต่ำ อย่างไรก็ตาม ในทางปฏิบัติเพื่อย่นเวลาการอบแห้งที่ยังต้องการแหล่งความร้อนแหล่งความร้อนที่ใช้ในการอบแห้งหลากหลายรูปแบบเช่นสายไฟฟ้าเครื่องทำความร้อน ไมโครเวฟ อินฟราเรด อบไอน้ำ และปั๊มความร้อน [3] แต่แบบซึ่งมีข้อดีและข้อเสียของการแตกต่างกันเช่นแหล่งความร้อนจากอินฟราเรด ซึ่งการใช้ความร้อนเป่าเป็นที่ต้องการ เนื่องจากรังสีอินฟราเรดสามารถเจาะเข้าไปในวัสดุ โมเลกุลของน้ำในวัสดุเพื่อ vibrate และสร้างความร้อน นี้จะเกิดในอุณหภูมิที่สูงกว่าอุณหภูมิที่พื้นผิวของวัสดุ พื้นผิวภายนอกวัสดุแห้งเป็นรอยย่น และยังคงคุณสมบัติของผลิตภัณฑ์เป็นใกล้กับวัสดุที่จะแห้ง [4] In addition, heat from the infrared source. To provide heat quickly. And distributes heat evenly, easy installation, energy saving and reduce the time for drying. [5] and the heat from the heat pump. The device that is used to heat the dryers vacuum. Because there are several advantages to having the ability to save energy. You can use the thermal energy in the form of heat exposure and heat. Can reduce the humidity of the air used in the drying downward. [6] As a result, can be dried under low temperature for drying products that are sensitive to heat. [7] In addition, the cooling coil of the heat pump can also be recycled to other benefits, such as building cooling system and the cooling system pump vacuum. In the vacuum drying system It uses a vacuum pump to pull air out of the drying chamber to the vacuum pump and used to be a Liquid ring vacuum pumps to use cold water for cooling. So the system has to be device that cold running water. The cooler is equipped with performance Besides cold water The cooling water pump vacuum and then some will be exchanged in a cool dry or condensed moisture from the drying product. But cold water provides waste heat to drain well this is a loss. The researchers examined previous studies, researchers found no one studied the waste heat of the water cooling system to be used in vacuum drying. This research thus waste heat of water chiller system with infrared vacuum drying by studying the efficiency of drying infrared vacuum dryer and waste heat of water chiller system with infrared vacuum drying. Then compare the energy use of drying infrared vacuum dryer and waste heat of water chiller system with infrared vacuum drying.
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