Hamon Wet Cooling Systems
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Hamon Wet Cooling Systems Cooling towers

Why wet cooling? Wet cooling offers an outstanding performance by taking full advantage of the ambient air humidity. Wet cooling, also called evaporative cooling, enables to obtain a re-cooled water temperature at least 20°C lower as compared to a radiator. As turbine output and hence power plant output increases by 0.3 to 1 % per degree of better cooling, wet cooling is a technology that can generate outstanding fuel saving and carbon emission reduction. Does wet cooling use a lot of water? One to two percent of the water is evaporated only. For this reason, a closed loop circuit with a...

ected cooling towers: engineered by experts Our commitment to the industry Hamon Thermal aims at offering the best economical solution for the whole lifetime of field erected cooling towers. Hamon cares for most of the industries and its expertise covers: hermal, hydraulic and structural design T oise and plume abatement as well as other N environmental aspects election of associated equipment such as: S pumps, piping, electrical and instrumentation, water treatment, lighting, etc, ivil work construction and mechanical erection C ommissioning, testing and auditing C pgrading, repair and...

Fan assisted natural draft Best solution when vailable plot area and/or height are limited A mportant heat load variation are expected I In the seventies and early eighties, many large power plants were built and equipped with tall natural draft cooling towers (NDCT) in Europe, US, South Africa, India, China, etc. NDCT Refurbishment Restoration or improvement of the CT performance Experienced teams used to work during limited shutdowns Removal and replacement of asbestos cement sheet Recycling and re-use of PVC Flue gas dispersion through NDCT pplicable in thermal power plants A o large...

Natural draft cooling towers Beyond the power saving, NDCT offers the following advantages: limited plot area o mechanical noise (no fan) n limited maintenance igh longevity (generally more than plant life h expectancy) The payback period of an NDCT is 8 to 16 years depending on several factors. The main one is the local con­ truction cost, which may dramatically vary s from one country to another. Hamon can either supply the turnkey tower or the thermal part with services like civil work design, construction steering, supervision, erection... Hamon has designed and built more than 300 NDCT...

Different types of structures

Mechanical draft cooling towers Thanks to its flexibility and cost ­ ffectiveness, the e mechanical draft cooling tower (IDCT) ideally answers most cooling duties and plant requirements. With approximately 5000 references in this type of tower, ­ amon has come across most of the applicaH tion requirements and has developed the technology to meet them. Each customer takes full advantage of this technology data base and enjoys a product that is fine tuned and fills his requirements and budget. We build any size of IDCT with any type of structure (steel, wood, FRP, prefab concrete, cast...

Absolute humidity 1 Inlet 2 xit wet section - supersaturated air E visible plume 3 Exit dry section - heated and dry air 4 Exit cooling tower - no saturated air Mixing line Principle of plume abatement Outlet air of the wet section of the cooling tower B is mixed with the air heated C by the finned tube bundles installed in the walls above the wet section. Outlet air characteristics D will then be positioned on the line linking points B and C. If the line linking points D and A does not cross the 100% humidity curve, no plume will be visible.

Plume abated cooling towers A plume abated cooling tower (PABCT) is the best available solution where local constraints are such that the presence of plume is not accepted in normal conditions (along motorways, airports, close to residential areas...). In this area, also called hybrid or wet/dry, Hamon’s technology is unrivaled. Mechanical Draft The first option is an IDCT offering the same flexibility, adaptability and all features listed in the previous pages. Compared to other technical solutions, it combines the following advantages: o plume visibility n utstanding performance of an...

Sea water When close to the sea shore, many plants are cooled by a once-through sea water system. The investment for such a system is huge and the heat rejection back to the sea can either generate hot water recirculation and/or impact the sea ecosystem beyond acceptable levels. Replacing the once-through system by a cool­ng tower circuit i tremendously reduces both initial investment costs and sea environmental impact of the power plant. The design of the cooling tower will take, among others, the salt concentration into account. Special care is given to construction materials (structure...

Special applications Noise attenuation In order to limit the noise level, actions can be taken at three level: t the source with low noise fans and mechanical a devices t the emission area with louvers, baffles, a motor enclosures, special casing type etween the noise source and the reception point b with screens, walls or embankments Cooling towers for acid solutions Hamon has developed cooling solutions for low pH waters. Forced draft has been selected for easy access and maintenance. District cooling Working on broadly similar principles to district heating, district cooling delivers...

Hamon has a wide range of heat transfer media suitable for: ny industrial water a ea water s ow pH solution l SE (treated sewage effluent) T A

Heat transfer media The GOLDENGRIDS A, the real splash fill, is the all purpose solution suitable for most water qualities, including sea water and heavily contaminated water. This heat transfer media consists of trays hung from beams located above the water distribution. The grids, their supports and spacers are made of polypropylene; the wires according to the water aggressiveness are in SS316 or in a more exotic alloy. The TRICKLEFILL B offers what is probably the highest resistance to scaling and fouling worldwide. Using Hamon’s well proven technology of non-contact sheets, this...