Liquid Desiccant Dehumidification and Cooling Systems

Posted on: March 6th, 2014 by Bruce Fontaine No Comments

Liquid Desiccant Systems use a non-toxic brine solution that soaks a Honeycomb Media to remove the Humidity and Enthalpy from the Air, thus conditioning the air that is to be distributed to the space.

Here is how the System Works: Outside Air and Process Air

Outside Air
1. Outside air enters system
2. Air is heated by heat exchanger
3. Liquid Desiccant heated by heat exchanger
4. Heated liquid desiccant flows on and soaks the honeycomb media
5. Air passes through the soaked media
6. Liquid Desiccant releases transferred moisture
7. Hot & Humid air is released to the outdoors
8. Concentrated liquid desiccant drains back into sump

Process Air
1. Air ( to be treated ) enters the system
2. Air cooled by heat exchanger
3. Liquid desiccant cooled by heat exchanger
4. Cooled liquid desiccant flows on and soaks honeycomb media
5. Air passes through soaked media
6. Liquid Desiccant absorbs humidity, cleans and cools air
7. Treated air conditions room
8. Diluted liquid desiccant drains back into sump
9. Water diffuses to higher Liquid Desiccant concentration to reach equilibrium

Liquid Desiccant Systems provide by Sustainable Management Solutions (SMS) is the Advantix Systems which can greatly reduce your HVAC workload by more than 30% – 80%!

Please contact SMS if you have any questions or if you have an Application that you would like us to look at!


Dehumidification Principles

Posted on: February 22nd, 2014 by Bruce Fontaine No Comments


The principles of Dehumidifying of air may be accomplished by three methods: Cooling – condensation of vapor, Adsorption of water and adsorption of water vapor.

1) In the cooling of air the humidity is reduced by cooling the air (via an evaporator coil or cooling coil) below dew point. The grains of moisture of the air is condensed on the coil and drained out by the condensate pan and condensate line. The efficiency of the coil or elimination of microbial growth on the heat transfer area (fins of the cooling coil or evaporator coil) will allow the air conditioning system to remove the ‘total heat content’ or Enthalpy & moisture in the air faster. This is accomplished by utilizing SMS’s ultra violet lighting system that will eliminate any microbial growth (bacterial & fungi) from growing on the fins of the coil. Thus, it allows the air that is going through the coil to be slower so that the air can be below due point and condense the moisture in the air faster.

2) Adsorption of water vapor is accomplished when the humidity is reduced by an adsorbent material such as silica gel or activated alumina. These systems are usually on chilled water systems and air handling units.

3) Absorption systems reduce the humidity with an absorbent material such as calcium chloride solution and it is generally not easy to reactivate the material. This system can be on packaged roof top units as well as air handling units.

Sick Buildings

Posted on: August 15th, 2013 by Bruce Fontaine No Comments

sick home

Sick Building Syndrome is a real problem in buildings today globally.  Building Owners & Property Managers are challenged with trying to keep their indoor environments free of microbial contamination mostly caused by the buildings air conditioning systems.  Also, if the tenant space in a Class A Building environment has mildew odors; that is usually a sign of fungal contamination from the A/C System and makes the space much harder to rent.  Employee absenteeism is a big problem as well as companies are trying to keep their employees healthy and free from viruses, bacteria & mold.  The microbial spores are distributed through the air stream of the Building Air Handling Units(AHU’s).  The use of UVG (Ultra Violet Germicidal) lights are now being used in eliminating microbial contamination in office buildings to kill airborne pathogens to reduce employee absenteeism rates as well as to increase occupancy rates for building owners and property managers. The other benefits from UVG Lights are in energy and maintenance savings that will be discussed in other articles.

Sick Building Syndrome has risen since buildings now have sealed exterior shells.   Many people have reported related health problems to this work environment; their resolution could result in health benefits for as many as 15 million workers, and economic cost of $5-75 billion per year, in the USA alone! Many studies have been done and have shown outbreaks of rhinitis, upper respiratory infections, asthma as well as re-circulated viruses that were brought into the workplace by other building occupants. By putting UVG Lights on the discharge side of the cooling coil so that it can irradiate the coil and drain pan where bacteria and mold typically grows, as well as “On The Fly” of killing the spores of viruses, bacteria and mold that are in the air stream itself. IAQ or Indoor Air Quality is very important in office environments today and using UVG Light Technology could reduce Sick Days by as much as 20%, elimination of up to 100% of airborne infectious diseases, as well as to prepare for pandemic risks. Contact SMS about making your Sick Building Syndrome go away by using UVG Light Technology!

Learn How BiPolar Ionization Improves Air Quality

Posted on: August 14th, 2013 by Bruce Fontaine No Comments

Sustainable Management Solutions (SMS) BiPolar Ionization Products are used to remove indoor air pollutants from the occupied areas that the HVAC System is conditioning.

SMS’s BiPolar Ionization reproduces mountain elevation ion levels indoors. This is done by increasing the quantity of charged oxygen ions to “Fresh Air” levels, oxygen molecules can once again become active and therefore improve indoor air quality. BiPolar Ionization works by releasing positive and negative ions that are generated by the ionizer and then sent through the Air Conditioning ductwork. The ions neutralize the particles in the air by attaching itself to the molecule and making it heavier and bringing it out of the breathing zone. The ions reduce particulates such as smoke, dust and pollen causing them to fall to the floor while reducing odors, bacteria and mold by oxidation. With fewer airborne pollutants, the air you breathe is significantly cleaner and healthier.

The Benefits of BiPolar Ionization on the energy side or sustainability side is that when you reduce the indoor air pollutant load then the amount of fresh air intake that the system was required to condition is now less, therefore your cooling capacity load is now less which results in less energy consumption. The other benefit is during “New Construction”, with less of an indoor pollutant load, the HVAC System Foot Print is smaller, thus costing less. For Commercial or Residential Applications the BiPolar Ionization System is designed based on the “Indoor Air Pollutant Load” and the CFM of Airflow, once this is done, SMS will design a system and tell you how many ionizers are required for your application.

Let SMS evaluate your Building Indoor Pollutant Load today and recommend the right BiPolar Ionization System for your specific Application!

UVC Technology Benefits

Posted on: June 30th, 2013 by Bruce Fontaine No Comments

UVC Technology has three benefits:

  • Energy Savings by cleaning the cooling coil and bringing the AHU back to its OEM Specifications by removing the BioFilm scale on the fins of the coil we are able to absorb the heat from the air by removing the restriction that the BioFilm causes, thus the air moves thru the coil slower which will allow it to absorb the heat faster which reduces the run time on the unit.
  • Reducing maintenance cost by putting UV on the discharge side of the coil you will never have to clean the coil again and no need for cleaning the condensate pan ever again or drain pan tabs.
  • Improvement in indoor air quality or IAQ; this will reduce absenteeism of the occupants and make them more productive, as well as to eliminate Sick Building Syndrome.
  • UVC Technology requires the proper application and SMS will determine the condition of the coil and what type of fungi & bacteria that we are trying to kill so that we put in the correct dosage of UVC.

UVC Implementation Steps:

  • Survey the equipment and measure the size of the cooling coil height & width.
  • Swab the coil and send it to a third Party Lab EMSL to determine the amount of CFU’s (Colony Forming Units) of bacteria & mold.
  • SMS then runs a software selection to determine the correct application and the number of high output UVC 360 Degree Lamps.
  • Run the ROI calculator which usually has a payback of less than a year but we have seen paybacks in less than three months.

SMS has done numerous Retrofits for Stiles PM, New Boston Fund, CBRE, Grubb & Ellis, JCI/York in the Middle East & Turkey, Volva, Walgreens both Stores and Distribution Centers, etc. Give SMS a call so that we can show you the power of UV and save you Energy, Maintenance, while improving your IAQ!