Dehumidification >> How To Dehumidify Air

Dehumidification Options Tunnel Moisture Load: The cost of dehumidification is directly related to How To Dehumidify Air the moisture the tunnel air will pick up from water sources in the tunnel. To keep the air dry at low cost, it will be essential that water sources are eliminated or kept to a minimum. Areas where tunnel walls show excessive infiltration should be sealed if possible. 

Water should not be allowed to pool or run through open trenches - drainage should be provided in a closed piping system. The 35km tunnel is approx. 6 times the How To Dehumidify Air size of the current Main Ring tunnel. A recent study of dehumidification issues in the Main Ring showed that humidity comes from 3 principle sources besides the ventilation air intake.

These are: 1. Transmission through concrete = 5 lb/hr 2. Trench and sump evaporation = 170 lb/hr 3. Allowance for water spray from leaks = 70 lb/hr which gives a figure for How To Dehumidify Air moisture build-up in the Main Ring of 245 lb/hr. If we multiply this by the factor of 6 increase in tunnel length for the 3 TeV machine we would have over 1000 lb/hr in moisture released to the tunnel air. 

This straight forward scaling does not directly apply, because water spray from leaks should not be an issue as only cryogens are anticipated in the tunnel. However, trench and sump evaporation, if multiplied by a factor of 6, How To Dehumidify Air would result in 1000 lbs/hr release to the air.Because the dolomite is not a good water conductor at a depth of 400 feet, we can be optimistic about controlling water penetration through the tunnel rock, especially if care is taken to seal the bad spots. 

Trench and sump evaporation can be improved by use of enclosed drain lines and sealed sumps. With How To Dehumidify Air these considerations in mind, we would design a basic dehumidification system to handle 200 lbs/hr, with provision for expansion if conditions prove more extreme in reality. Ventilation System Capacity: The ventilation system shown in figure 1 allows for the minimum breathing requirements for tunnel personnel. 

Air is introduced into the tunnel at one of the two access shafts, and released at the other, How To Dehumidify Air the two halves of the ring being fed in parallel.The system shown has a capacity of about 15,000cfm which results in a 100fpm wind (1mph) through the tunnel and a 1”wc differential pressure end to end. This minimal ventilation reduces moisture load from outside air intake to a minimum, however, it also results in a 10 hour air purge time for the tunnel. 

The cost for this scale of system (not including tunnel ducting) would be about $700K1 . It would have the ability to remove 200 lb/hr of tunnel moisture (in addition to outside air moisture) to How To Dehumidify Air keep the tunnel moisture below the dew point at 55F. The ventilation unit will have to be fitted with heating capacity for winter operation. The ventilation system could be increased to allow for additional capacity.For every 1 lb/hr of tunnel moisture, 75cfm of additional air flow would be needed, at a unit cost of about $3.5K (not including tunnel ductwork).

 At a size of 150,000cfm (allowing the tunnel to be purged in 1 hour) the ventilation system would be able to remove 1800 lb/hr of moisture and with economies of How To Dehumidify Air scale would cost about $5M (not including tunnel ductwork). Air velocities in the tunnel would be about 1000fpm (10 mph) and require a differential pressure of 8”wc across the tunnel, which would require special design considerations. 

Auxiliary Dehumidifiers: Auxiliary tunnel dehumidification units could be placed down the tunnel length. At a half mile spacing between units, 44 units would be required.To preclude dead spots in the tunnel air movement, How To Dehumidify Air due to these units simply recirculating on themselves, it would probably be necessary to run the ventilation system concurrently. These units normally range from 10 lb/hr (size 300 unit) to 32 lb/hr (size 1200 unit) moisture removal capacity each. This would total 440 to 1408 lb/hr capacity for 44 units. The unit cost of this type of equipment runs about $2.5K per lb/hr capacity (not including electrical installation and assuming that no ducting is necessary). 

An example of a ventilation unit mounted in a 10 foot tunnel is shown in figure 2. Other Considerations The 3 TeV accelerator adds about 3 watts per meter in heating to the tunnel. This How To Dehumidify Air represents about a 100 kwatt heating load. This would increase the tunnel air temperature by about 20 degrees F at the exhaust point. This actually serves to help the dehumidification system in the following sense:

 In the Winter, the chiller system is turned off and the outside air is heated before injection into the tunnel. The extra heating from the accelerator components helps this How To Dehumidify Air process. An Electron Ring An electron ring will loose energy in the tunnel due to synchrotron radiation at a rate that may be as high as 50 Mwatts. Such a high heating load could not be air cooled, and would have to revert to another cooling medium - presumably water. 

The addition of a large water cooling capability into the tunnel could complicate the dehumidification problem, How To Dehumidify Air because of the potential for leaks. Recall that the Main Ring must allow for as much as a 70 lb/hr load that could come from leaky water systems.

 Conclusions A ventilation system for a 3 TeV ring need not be an excessive cost to the project. A great deal depends on the care taken to seal potential water sources in the tunnel. Based on the experience gained at the Main Ring tunnel, How To Dehumidify Air a system that can handle a 200 lb/hr load could very well be sufficient. However, the 200 lb/hr system should be treated somewhat optimistically as a target. As more data become available, and plans for the electron machine firm up, the dehumidification requirements can be predicted with greater certainty.

Flooded Garage

Reentering Your Flooded Home When returning to a home that's been flooded, be aware that your house may be contaminated with mold or Flood Damage Flooded Garage sewage, which can cause health risks for your family.

When You First Reenter Your Home If you have standing water in your home and can turn off t  read more..

Cost Of Removing Asbestos Siding From A Home

For slightly damaged asbestos-containing material, sometimes the best way to deal with it is to limit access to the area and not to touch or disturb it. If asbestos-containing material is more than slightly damaged or if you are going to make changes in your home that might disturb it, repair orÂ&n  read more..

How To Test For Hoarding

Over the past year, my office has received an unusually high volume of calls from constituents who find themselves in difficult situations because of their out-of-control, overly cluttered apartments. Dismayed by the number of residents that are not only in danger of losing their homes, Hoarding How To Test For Hoarding&nb  read more..

Leaking Shower Caused Wet Carpet

Molds are types of fungi that are found everywhere. Molds reproduce by means of tiny spores; the spores are invisible to the naked eye and float through outdoor and indoor air. Mold may begin growing indoors when mold spores land on Water Damage Leaking Shower Caused Wet Carpet surfaces that are wet. 

  read more..

Trauma Scene Management Biohazard Remediation

Law enforcement officers and correctional officers may face a number of situations where there is occupational exposure to blood and other potentially infectious materials. In its publication "Guidelines for Prevention of  Crime Scene Cleanup Trauma Scene Management Biohazard Remediation Transmission of Human Immunodeficiency Virus and Hepatitis B Virus   read more..

Fire Restoration

The following article will present strategies to respond to water damaged Document restoration Fire Restoration. These articles are written to help evade the need for mold remediation by taking quick action before mold growth begins. It is imperative that water-impacted documents be dried and/or removed as soon as possible af  read more..

Foundation Repair

When As Well As Why you Should Turn to Crack in Foundation Repair Services Sooner or later, just about all homes will move and also settle. This could result in chips, which frequently need repairing Basement Drying Foundation Repair piers. Several cracks, however, are simply in the cosmetic finish of the foundation repair. The  read more..

Mold Detector

Assess the size of the mold and/or moisture problem and the type of damaged materials before planning the remediation work. Select a remediation manager for medium or large jobs (or small jobs requiring more than one person). The remediation plan should include steps to fix the water or moisture pro  read more..

DIY Removing Smoke Damage From Wood

In one set of tests, the vertical plates were placed with a fixed spacing of 2.5 mm. In these tests, the plates were biased with 5 Vdc, 50 Vdc, 500 Vdc and 1 Vac. The current flow between the dc-biased plates was monitored during exposure. The ac-biased plates were analyzed to measure Smoke Damage DIY Removing Smoke Damage From Wood   read more..

How Effective Are Dehumidifiers

In recent years, we have received hundreds of requests for small scale lumber dry kiln plans from woodworking hobbyists. People were looking for an inexpensive and simple kiln design that could cost effectively dry as little as a few hundred board feet of lumber Dehumidification How Effective Are Dehumidifiers or as much as several   read more..