In central air handling units cooling and dehumidifying of the air usually takes place using chilled water cooling coils with one of the two kinds of circuits: temperature controlled or mass flow controlled chilled water supply circuits.<br><br> <strong>Technology</strong><br> The invention combines both types, the temperature controlled and mass flow controlled chilled water supply in one water circuit arrangement. Thus combining the advantages of the temperature controlled circuit with those of the mass flow controlled chilled water supply circuit, without the disadvantages immanent in the two circuit systems.<br><br> A simple but very effective valve arrangement, combined with a variable speed pump (see Figure) allows simultaneous control of the mass flow and the water supply temperature. The supply water temperature determines the slope of the change of condition and the mass flow controls the cooling power applied to the air. This allows cooling the air with or without dehumidification as well as dehumidifying the air with a minimum amount of cooling, resulting in substantial energy savings.<br><br>
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Variable number of threads in braiding machines
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In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...
The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.
As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...
When an earthquake hits, the faster first responders can get to an impacted area, the more likely infrastructure--and lives--can be saved.
The Atlantic overturning is one of Earth’s most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe.
Scientists now found evidence for a slowdown of the overturning – multiple lines of observation suggest that in recent decades, the current system has been...
Because they are regularly subjected to heavy vehicle traffic, emissions, moisture and salt, above- and underground parking garages, as well as bridges, frequently experience large areas of corrosion. Most inspection systems to date have only been capable of inspecting smaller surface areas.
From April 13 to April 17 at the Hannover Messe (hall 2, exhibit booth C16), engineers from the Fraunhofer Institute for Nondestructive Testing IZFP will be...
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