Possible heat and mass transfer enhancement mechanisms associated with integration of ultrasound were investigated and based on the variation of the permeate flux with frequency, the enhancement was mainly attributed to acoustic cavitation. The ultrasound-assisted enhancement increases with higher ultrasonic power and lower frequency, as well as lower feed temperature and higher concentration. Results show that applying low-power ultrasound can improve the permeate flux up to 24% compared to the same process without ultrasonic energy under the same operating conditions. The effects of ultrasonic power and frequency under different feed temperatures and concentrations were investigated experimentally. In this study, an S-VMD system that uses ultrasonic energy as an agitation technique is proposed. Federal Government, with expertise across Cybersecurity, Digital Infrastructure, Agile Engineering, Homeland. Vision Mission Driven VMD is an award-winning provider of IT and Homeland Defense services to the U.S. Repairs / LMS4/5, LMS251, VMD 2 repair lump-sum Component faults and the resulting system downtime are often due to a variety of. Revenue: 25 to 100 million (USD) Competitors: Unknown. Agitation techniques such as aeration and circulation have been used to enhance the permeate flux and to mitigate the effect of temperature and concentration polarizations, a major drawback in S-VMD. Industry: Information Technology Support Services.
Patent and Trademark Office (PTO) for end user information technology support services. Submerged vacuum membrane distillation (S-VMD) is a thermally driven separation process capable of desalinating water with high salt concentration. VMD Systems Integrators, Inc., of Vienna, Virginia, protests the award of a contract to Evolver, Inc., of Reston, Virginia, under request for proposals (RFP) No.
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