HDH desalination is relatively a new technology compared to the other desalination methods. HDH is a mimicked naturalwater cycle. The research progress is significant from the end of the 20th century. From the beginning of 21st century,many novel versions of HDH desalination are inventing. This technology has potential market to meet the water demand atthe domestic and industrial level. The simple design and operation at atmospheric pressure are attracting themanufacturers, design engineers, inventors etc. towards the HDH technology.The grid independent vapour compressionrefrigeration (VCR) heat exchangers assisted hybrid desalination offers maintenance free system as the electricity cost willbe covered by the solar PV plant. The initial investment, erection and salaries are the main cost involved in the commercialimplementation of the work. At the domestic level, fresh water and air conditioning needs are increasing. The current workis targeted to meet the daily needs of 1 TR of cooling and 100 liters per day of drinking water from the raw water. The mainobjectives of the proposed work are demonstration of the hybrid plant for fresh water and cooling, increasing the waterproduction rate from the brackish water and optimization of combined output of water and cooling. The once through ductdesign for the two stage operation facilitates the easy flow of air with a minimum pumping power and resistance. Thenovelty of the proposed HDH-VCR plant is as follows:Use of VCR system for heat pump operation (air preheating) and refrigeration (dehumidification) boosts the overall energyconversion.The two stage operation of desalination with normal water in first stage and VCR’ evaporator in the second stage resultshigher desalination compared to the conventional or existing operation of HDH.
Achievements
The design of the once through hybrid humidification dehumidification and vapour compression refrigeration (HDH-VCR) plant has been streamlined to minimize the pressure drop with the industrial feedback. The photo has been attached. The MoU with the two industrial partners has been completed. The signed copies of the MoU documents (scaned) are forwarded through the mail.
Industry Collaboration
Oorja Energy Engineering Services Hyderabad Pvt. Ltd., Hyderabad; The Green Builders aiding sustainability, Jalandhar
Dr. B R Ambedkar National Institute Of Technology Jalandhar, Punjab
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