Dehumidification >> Wet Crawl Space Dehumidification Vs. Ventilation

While the kiln described in this publication is designed for simple operation, you will still need to closely monitor the drying process. Monitoring the moisture loss and quality of the wood during the drying process will help you maximize the efficiency of the kiln. Simply explained, when drying lumber you want to dry fast enough to prevent stain and long drying times, yet slow enough to prevent checks Wet Crawl Space Dehumidification Vs. Ventilation and other drying defects. 

The prevalence of certain defects is influenced by the species, thickness, moisture content, and drying conditions. Monitoring the moisture content during the drying process is important to avoid drying too rapidly (which results in quality loss) Wet Crawl Space Dehumidification Vs. Ventilation and to know when the load has reached the desired moisture content. 

Measure the sample boards daily to determine the daily rate of moisture loss. This loss should be compared with the safe drying rate for that species (see Figure 7 for hardwoods). If the drying rate is too fast, Wet Crawl Space Dehumidification Vs. Ventilation then it may be necessary to increase the relative humidity setpoint of the dehumidifier or turn two of the four fans off. 

Lumber should be dried to the maximum safe drying rate without exceeding the daily loss. The safe drying rate refers to the moisture loss in one day, Wet Crawl Space Dehumidification Vs. Ventilation not the average loss over several days. Figure 7 lists the safe drying rate for common one inch thick North American hardwoods. Softwoods are typically able to dry at a much faster rate and moisture content losses above 10 percent per day are quite common. 

When lumber is at its highest moisture content, Wet Crawl Space Dehumidification Vs. Ventilation it is important to adhere to the safe drying rate. Most unwanted checking and splitting in drying lumber occurs as the wood loses the first one-third of its moisture content. Once the lumber dries below 22 percent moisture content, the risk of creating new cracks and splits is low. 

Dry lumber for interior use to a moisture content of six to eight percent for most areas of the country. This will limit the amount of dimensional changes that would occur when the wood is processed Wet Crawl Space Dehumidification Vs. Ventilation and in service. Lumber used for exterior purposes is usually dried to 12 to 15 percent moisture content. Softwood lumber used for framing is commercially dried to 19 percent moisture content. 

However, fewer building defects would result if softwood framing lumber were 5 dried down to 12 percent moisture content. For information on drying schedules Wet Crawl Space Dehumidification Vs. Ventilation and schedules for specific species and thicknesses, see the reference to the Dry Kiln Operator’s Manual and the Dry Kiln Schedules for Commercial Woods: Temperate and Tropical. 

In measuring the rates of moisture loss, it is impractical to weigh every board in the kiln and electric meters are not accurate above 30 percent moisture content. Therefore, Wet Crawl Space Dehumidification Vs. Ventilation the sample board method should be used to determine the moisture content of lumber in the kiln. This method uses short, carefully chosen sample boards sawn from larger pieces of lumber and these sample boards are weighed periodically and estimated moistures are calculated. 

Since the wettest or slowest drying lumber in the kiln has the highest risk of splitting and cracking, the sample boards should represent this kind of lumber. Use samples from the most recently cut wood, the widest and thickest boards, Wet Crawl Space Dehumidification Vs. Ventilation lumber with the most heartwood, and boards that are quarter sawn whenever possible (see Appendix C: Procedures for Cutting and Using Sample Boards). 

Select a few boards from the stack of lumber that represent the slowest drying material. These would be the widest, thickest, Wet Crawl Space Dehumidification Vs. Ventilation and highest moisture content boards. Boards that contain the most heartwood or are quartersawn are also suitable. 2. Cut a 24 to 30 inch sample that is free of knots and at least 12 inches from the end of the board. 

Then cut two one inch sections from the sample board as shown (see Figure A). Make sure to number the sections Wet Crawl Space Dehumidification Vs. Ventilation and sample board. 3. Immediately weigh the one inch sections (accuracy of about one gram required) and record the weight. Measure immediately after cutting since it is important that they do not gain or lose weight before weighing. 

4. End coat the sample board with a roofing cement or commercial end coating (see Figure B). Now, Wet Crawl Space Dehumidification Vs. Ventilation weigh the sample board and record the weight on the sample (accuracy of 0.1 pounds). 5. Place the sample board in the lumber stack in a location where it will dry at the same rate as the rest of the lumber in the dryer (see Figure C). 

6. Place the one inch sections in an oven 215ºF to 218ºF (102ºC to 103ºC) and dry– usually 18 to 36 hours depending on the oven. Reweigh Wet Crawl Space Dehumidification Vs. Ventilation and obtain the oven dry weight. 7. Calculate the moisture content of each section and average the moisture content (MC) of two sections to obtain the moisture content of the sample board. 

8. Estimate the oven dry weight of the sample board using average moisture content and weight from step #4, and record this so it can be used for future moisture content calculations. 9. To determine the moisture content at any time, Wet Crawl Space Dehumidification Vs. Ventilation reweigh the sample board and calculate. Treatment and disposal of large amount of produced water is a considerable economic and environmental burden for oil and gas industry. 

On the other hand, for many remote areas with shorting of clean water supply and enriched with oil/gas production such as New Mexico, Wet Crawl Space Dehumidification Vs. Ventilation purified produced water could be a valuable water source for beneficial uses. The goal of this research is to purify produced water at wellhead, yielding water clean enough for beneficial uses like drilling, stimulating, or water flooding. 

A new concept of produced water purification by Humidification-dehumidification (HD) process was developed in which low-temperature energy sources, Wet Crawl Space Dehumidification Vs. Ventilation such as co-produced geothermal energy or solar energy, could be used to drive the water desalination process. 

The system contains humidifier where produced water meets with flowing air for evaporation and dehumidifier for clean water creation and collection. The unique feature of this process is that co-produced geothermal energy or Wet Crawl Space Dehumidification Vs. Ventilation inexpensive solar energy could be deployed. In addition, direct internal heat transfer has greatly enhanced latent heat recovery.

Flood Damage House

STUDY FACTS:

Power outages were the cause of 18% of water

damage incidents involving a sump pump.

Another 40% of incidents were attributed

to things such as a clogged inlet

screen or a faulty float switch.

LOSS PREVE  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..

Work Related Lead Testing

For industrial workers, What can I do to protect myself? Make sure you don't accidentally swallow lead. Wash your hands and face with soap and water before eating or drinking and before leaving work. Do not eat, drink, or smoke in the work area. Take a shower Lead Paint Removal Work Related Lead Testing and wash your hair as soo  read more..

Crime And Trauma Scene Biorecovery Training

Regulated waste must be disposed of according to federal, state, and local regulations. Place all regulated waste in closable and biohazard labeled or color-coded containers (bags). Waste, may be placed in plastic,  Crime Scene Cleanup Crime And Trauma Scene Biorecovery Training sealable bags before disposal in a larger biohazard bag in order to reduce  read more..

How To Pass A Radon Test

Successful IAQ management in schools comprises effective pollution source control. Radon — a radioactive gas — is one of the most hazardous indoor pollutants. Radon is the leading cause of lung cancer among non-smokers. In the U.S., Radon Mitigation How To Pass A Radon Test an estimated 20,000 people die from radon-induced   read more..

Facts About Asbestos Removal

Residents could have inhaled Libby asbestos fibers from household dust—either from plant emissions that infiltrated into homes or Asbestos Abatement Facts About Asbestos Removal from dust brought inside from waste products brought home for personal use. 

No information on past levels of contamina  read more..

Hail Damage

Hurricane waves move near shore until the water becomes shallow enough to start wave breaking. The extreme breaker height in shallow water is a purpose of water depth; bottom slope; and Wind Damage Hail Damage event wave height and phase. Larger waves originally break some expanse offshore, then restore and per  read more..

Home Remedies For Fire Damage

Only fire-safe cigarettes will be manufactured and sold in California starting January 1, 2007.Fire-safe cigarettes, which are less likely to burn and cause fires when left unattended, were mandated by AB178, Fire Damage Home Remedies For Fire Damage the California Cigarette Safety and Firefighter Protection Act, included in a child pr  read more..

Home Remedies For Smoke Damage

You want to take good care of your family. You try to eat healthy foods. You take your children to the doctor for regular checkups. You try your best to protect your family from accidents and illness. You want to live in a safe neighborhood and home. But did you know your home might have Smoke Damage Home Remedies For Smoke Damage hidden  read more..

Find Out If A Neighbor Is Running A Meth Lab

 
Evaluation and remediation of chemical spills and residuesIf any liquid or powder residues remain after DEA removal, contact Meth Lab Cleanup Find Out If A Neighbor Is Running A Meth Lab the DEA  read more..