Comparison between Heat Pump Drying Machine Technology and Traditional Drying Technology

Technical characteristics of heat pump dryer

1. The drying temperature is low. The production process of heat pump drying technology is about 38-52 ℃ lower than traditional drying technology, that is, the heating temperature of heat pump dryer drying technology is about 37 ℃.

2. Short drying time. The production process of heat pump drying and dehydrating vegetables requires no more than 8 hours, usually completed from preheating to 4 hours of production.

3. Good drying quality. The vegetables produced by the heat pump drying process have good color and stable internal quality.

4. Low energy. Due to the use of air circulation in the heat pump drying process, which has low heating temperature, short drying time, and large capacity, the energy consumption of the heat pump drying process is low, making it a good energy-saving product.

Comparison of economic and technical indicators

The economic and technical indicators of heat pump dryer and heat pump drying technology are significantly higher than traditional drying technology, mainly reflected in energy conservation, quality, efficiency, and energy consumption.

Heat pump drying

According to tests, processing 1 ton of fresh vegetables with a heater consumes 20kg of coal, a heat pump of 2.75kw, and a circulating fan consumes 0.2kw of electricity. Calculated based on 4 hours of operation, its energy consumption is 11.8kw, with 407g (kWh) of coal. The total energy consumption of 4.803kg of coal is 20kg+4.803kg=24.803kg. Traditional drying, total

Coal consumption of 240kg, circulating fan of 2.4kw, converted coal coefficient of 407g (kwg), calculated as 0.977kg, total energy consumption of 240+0.877=240.977. The energy-saving efficiency of the two methods is (1-24.880./240.977) * 100%=90%. In terms of quality, heat pump drying technology is used,

The product quality is stable and the color is good. No residue of materials such as S02.

In terms of efficiency, the heat pump dryer adopts the heat pump drying process product, with qualified moisture content, no rework phenomenon, and short drying time.

Energy conservation and environmental protection of drying equipment in China are urgent

In today's society, green environmental protection and energy conservation and consumption reduction have become global topics, and are listed as important factors for consumers to consider when choosing products. Therefore, many enterprises have taken advantage of the situation and developed green machinery products. Drying equipment is no exception.

High energy consumption. Traditional drying techniques have low thermal efficiency, around 30% -60%. During the drying process, the heat evaporated from water accounts for about 36%, the waste gas loss accounts for about 58%, the heat carried away by dry materials and the heat loss of the dryer account for 2%, respectively. The thermal efficiency is only

40%.