Dehumidification >> How To Select The Right Size Of Dehumidifier

During the humidification process, organics will evaporate accompanying the water evaporation, forming an organic-containing humidified air. Generally, How To Select The Right Size Of Dehumidifier the organic concentration in humidified air is far below the saturation, particularly for the volatile organics. The subsequent cooling for water condensation forms purified water while theHow To Select The Right Size Of Dehumidifier organic vapor will exit to the atmosphere. All experiments show high organic removal efficiencies (>95%) with slightly variation at different operating conditions. 

For example, the organic removal efficiency increased from 95.4% to 96.2% as feed water temperature was increased from 60 ºC to 80 ºC. The influence of feed water temperature on organic removal efficiency has the same trend as that on inorganic salts, How To Select The Right Size Of Dehumidifier which can be explained by the small water droplet formation at presence of strong air flow. 

Water quality and beneficial use Produced water contains large varieties of inorganic salts, How To Select The Right Size Of Dehumidifier heavy metals and organic contaminants. Direct disposal of produced water poses the potential for ground water contamination and thus may not be discharged to ground water system unless they are being purified to substantial quality [Santos et al., 1997]. Quantity and quality of purified produced water are the most important factors governing the beneficial uses when produced water is substituted for conventional water resource. 

Generally, beneficial use of produced water, such as irrigation, livestock watering, and power cooling, How To Select The Right Size Of Dehumidifier must satisfy all special considerations necessary for water quality requirement. Table 5-2 summarizes the general requirement of reclaimed water quality for How To Select The Right Size Of Dehumidifier the industry or agriculture applications.

 Figure 5-6 shows the picture of produced water sample as received, filtrated, How To Select The Right Size Of Dehumidifier and purified by the humidification-dehumidification process. Large number of oil droplets and particulates were observed on the produced water as received. A course filtration with 100 m Whatman­ filter removed the oil droplets and large particulates, but left all dissolved components and fine particles with detail composition shown in Table 5-1. 

The purification by the humidificationdehumidification removed majority of salts andorganics. The detail chemical composition of How To Select The Right Size Of Dehumidifier the purified water is shown in Table 5-3. The purified produced water has the TDS of 76.35 mg/L and TOC of 17.83 mg/L. All metal ions in the purified water are below the detection limit. Compare with Table 5-2 and Table 5-3, the purified produced water show much higher quality than the criteria for general irrigation, tower cooling and chemical processing. 

Humidification-dehumidification is an efficient desalination process for produced water purification. Low temperature operation and mobile device make it suitable for most oil field that locates at remote region. Otherwise, How To Select The Right Size Of Dehumidifier solar energy and co-produced geothermal energy from reservoir can be used in this process which makes it environment friendly and economic.

 The humidification-dehumidification process for produced water desalination was studied for removal of dissolved components from produced water, How To Select The Right Size Of Dehumidifier and influence of operation parameter on system performing efficiency. Humidification-dehumidification separator was re-designed to improve the performance of this process. The outcomes of the studies of total dissolved solid and organic removal efficiency; water productivity and heat efficiency are summarized below. 

A bench scale experiment with coalbed methane produced water indicated that over 99.5% of dissolved salt can be removed with the total dissolved solid decline from How To Select The Right Size Of Dehumidifier 1.98—104 mg/L to 76.3 mg/L. The humidification-dehumidification process also showed remarkable organic removal efficiency by reducing the total organic carbon from 470.2 mg/L to 17.8 mg/L. The water productivity is insensitive to the feed water quality and chemical composition and thus is particularly useful for purification of concentrated- or particulate-enriched produced waters.

 A built-in capillary tubing bundle was deployed as condenser for enhancement in water productivity and heat efficiency. The water productivity was How To Select The Right Size Of Dehumidifier increased from 48 to 311 ml/(hr.m2 ). The influence factors, such as feed water temperature and feed water/air ratio, on the water productivity were also investigated. Increasing feed water temperature or feed flow rate increases the heat loss, but the water productivity and recovery increase as a result of more efficiency heat use.

 The purified produced water has a higher quality than most of requirement of agriculture and industry uses. The humidification-dehumidification shows promise for reclaiming produced water for beneficial uses such as irrigation, tower cooling and chemical processing. 6.2 Recommended future work In this research, we have experimentally demonstrated the desalination capacity of humidification-dehumidification process on produced water. Water recovery and energy efficiencyHow To Select The Right Size Of Dehumidifier have been significantly improved by using built-in hollow tube condensers.

 The next step will be further investigate and understand the influence of operation parameter on water productivity and heat efficiency, How To Select The Right Size Of Dehumidifier and desalination system usage in the oil field. (1) Upscale the separation unit for field application of produced water desalination by using low-temperature energies. (2) Investigation of the influences of operation parameters on the purified water productivity. In order to find the best operation condition for different size desalination unit, the influences on desalination capacity need to be tested by enlarging the range of numerical value of each operation parameter, (3) Development of numerical model to simulate the mass and heat transfer and optimize an engineering design of the separation unit. Investigation of deployment of solar energy and co-produced energy sources. (5) Conducting of economic analysis for projection of equipment costs, operating costs and total water costs. Also, the water treatment cost should be a function of plant size, production rate, as well as waste or solar heat deployment. 

Sustainable Innovations has developed an innovative concept for highly efficient, reliable, How To Select The Right Size Of Dehumidifier potable water production based on technology from a commercial line of hydrogen recovery and compression systems the company is developing. This Electrochemical Dehumidification and Life Support System (EDLS) system utilizes a small amount of hydrogen as a working fluid, operating in a sealed cavity, and leverages a hydrogen compression cycle to provide the driving force to both remove water from the local environment, passing it into a dry hydrogen stream, and condense pure, potable drinking water. The hydrogen compression cycle used in this process is highly efficient, approaching the efficiency of an ideal isothermal compression process, and can be achieved without moving parts. This technology could play a key role in critical NASA environmental control and life support applications. 

POTENTIAL NASA COMMERCIAL APPLICATIONS(Limit 1500 characters, approximately 150 words) Transporting water from Earth for NASA space missions is cost prohibitive, How To Select The Right Size Of Dehumidifier so recycling is mandatory. Waste water must be reclaimed from various sources, including by condensing humidity from the air. Without careful recycling 40,000 pounds per year of water from Earth would be required to resupply a just four crewmembers. A highly efficient portable / transportable system for potable water production having no moving parts would significantly reduce the logistics burden. This technology can play a key role in any NASA application where life support is critical, from manned bases to the EMU. 

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS(Limit 1500 characters, approximately 150 words) Because water logistics have become very important in wartime events, How To Select The Right Size Of Dehumidifier we see the U.S. military as a primary initial customer for this technology. We anticipate teaming with a military equipment supplier to both finalize a product configuration and manufacture/supply the final product in accordance with applicable military standards. There are many opportunities for Atmospheric Water Generators (AWG) in the commercial sector, ranging from disaster relief to water generation in remote villages. 

Availability of potable water is perhaps the most critical need that mankind faces. With bottled-water consumption increasing and water distribution systems aging, How To Select The Right Size Of Dehumidifier water could be the next commodity consumers will want to produce at home. Market trends appear to be in atmospheric water's favor. According to the International Bottled Water Association, global consumption of bottled water has grown 7.6 percent per year on average since 2002, reaching 189 billion liters in 2007. The United States led consumption, with 33 billion liters, but was followed closely by populous developing countries like China, Brazil, and Mexico. China's market grew 17.4 percent per year. 

TECHNOLOGY TAXONOMY MAPPING(NASA's technology axonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, How To Select The Right Size Of Dehumidifier sorted into broad categories, of interest to NASA.) Chemical/Environmental (see also Biological Health/Life Support) Essential Life Resources (Oxygen, Water, Nutrients) In Situ Manufacturing Material Handing & Packaging Passive Systems Processing Methods Remediation/Purification Waste Storage/Treatment

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