Related Posts

• Is it “Heating & Ventilating Technology” or “Ventilating and Heating Technology?” That is the Question!

  As our clients navigate HVAC system design for high bay facilities such as distribution centers or industrial manufacturing plants, they are often asked to recommend a design that accomplishes 3 key deliverables. 1.) Meet variable ventilation requirements 2.) Meet heating requirements / (Consider air load and conductive load and comfort requirements) 3.) Evaluate redundancy to eliminate production and/or service interruptions As a manufacturer of high efficiency heating technologies (S-Series, SA-Series, Infrared) and ventilating technologies (M-Series, M-Series w/Cooling) we first seek understanding regarding how the building will be operated in order to recommend a heating platform, a ventilation platform, or both. While the core technologies are both 100% outside air, direct fired gas heaters, there are differences in system performance that will impact EE (energy efficiency), thermal comfort, and system installation cost. When there is a high level of CFM being exhausted due to processes inside a manufacturing facility, making up that building air loss with mechanical ventilation or inbound CFM is critical to balancing the air load of the building. Direct Fired Make-Up air systems with variable air ...

• Choosing the Right Heating System for your Facility

  Is the heating bill for your plant or warehouse too high? What about cold dock door areas and unbalanced temperatures? Is negative building pressure a problem? Do your employees complain about it being too cold making it harder for them to do their job? Do you have high maintenance costs from existing heating equipment? These are just a few common problems that result from selecting the wrong heating system, misplacing your heaters so they can’t reach their full potential or using obsolete technology. What factors determine the best space heating system? Everyone wants a heating & ventilating system that meets their unique requirements at the lowest total cost. Before selecting a heater, define the heating/ventilating requirements and understand all the cost factors that determine the true lowest total cost solution for a specific facility. BOILER SYSTEMS One of the oldest forms of heating, boilers have been in existence since about the 1800’s and are still a preferred system of heating in large industrial facilities where remote plants deliver steam and hot water to satellite locations to circulate through heat exchangers. These exchangers ...

• Indoor Air Quality…It Really is Important

  According to the Environmental Protection Agency the average American spends 93% of their life indoors…. 87% is spent indoors at their work and home and the other 6% is spent in their automobiles. With that much time spent inside we should all be more concerned with Indoor Air Quality. Recently Cambridge Engineering’s Doug Eisenhart published a post about IAQ that focused on the effects of temperature and productivity of a workforce because ambient air temperature is an IAQ factor. Doug was spot on with his comments about productivity and its correlation to temperature. Along with temperature the quality of the air from indoor pollutants is also an important IAQ factor that needs our attention. Pollutants such as volatile organic compounds (VOC), particulates and carbon dioxide, to name a few, can not only affect short term productivity but can also have long lasting negative health consequences to those working in that environment. One way to alleviate these types of IAQ problems is to have the building properly ventilated through the use of mechanical ventilation of filtered outside air. By using High Temperature Heating ...

• Why HTHV Is Advantageous for Heating Industrial Facilities

  High Temperature Heating & Ventilating (HTHV) direct-fired 100% outside air technologies HTHV with High Velocity Blowers provides destratification. Temperature stratification is a major issue in all high-bay industrial applications in the wintertime and must be addressed through the proper selection of destratification technologies. A recent study published by the Department of Energy titled Field Study of High Efficiency Gas Heaters looked at the energy savings accomplished with HTHV 100% outside air direct-fired technologies. The report states: “As evidenced by the temperature readings near the floor and ceiling, the new (Direct-fired 100% Outside Air HTHV) gas heaters reduced stratification, maintained more uniform temperature distribution, and consumed 20% less natural gas.” HTHV provides continuous or intermittent control options and heating and ventilating in a single unit Direct-fired 100% outside air systems provide controls to operate either continuously or intermittently based on occupancy schedule, process conditions, pressure, or any number of other control requirements. There are actually three primary modes of operation for these HTHV 100% Outside Air Technologies: Ventilation/Exhaust Replenishment  Space Heat & Ventilation Space Heat  HTHV provides pressure control design flexibility There are ...

• People Comfort - How Does It Effect Your Bottom Line?

  For the last 3 years my team has been traveling North America visiting with Cambridge Engineering’s, Sales Representatives to spread the word about options available to Building Owners, Building Operators, Design Engineers, Contractors and Utilities when recommending and selecting heating and ventilation solutions for their building or retrofit projects. We have been attempting to call out 3 core concepts for the key influencers when considering improvements to their buildings. 1.) Safety - Use of 100% outside air, direct fired HTHV and MAU technology is inherently safe. Ventilation and Heat are provided by the same blower that cannot be separated. These technologies can improve indoor air quality. Ventilation is the key to safety, preventing the buildup of products of combustion. 2.) Energy Efficiency - HTHV technologies provide the highest btus/cfm ratio thus creating more net useable btus or heat to satisfy the air load and the conductive load in high bay warehouses, distribution centers and manufacturing facilities. 3.) Lowest Total Installed Cost - HTHV technologies deliver 3 system in 1 piece of equipment. HTHV technologies deliver A.) Heat, B.) ...

• High Efficiency Space Heaters Get DOE's Attention

  Over the past 25 years, ASHRAE has dramatically increased the minimum efficiency requirements for commercial buildings and their associated equipment. The direct result: • 44% improvement in lighting efficiency • 27% improvement in cooling efficiency • 21% improvement in building envelope efficiency • 37% improvement in commercial building efficiency overall • But only 1% improvement in heating efficiency With such a small increase in heating efficiency compared to other categories, High Temperature Heating and Ventilation (HTHV) direct gas-fired heaters caught the attention of the Department of Energy (DOE) as a way to dramatically reduce energy consumption. In many commercial and industrial buildings, unit heaters are the popular choice for space heating. But, according to ASHRAE, these buildings require ventilation systems in addition to space heating in order to meet code. With separate systems providing space heating and outside air, most buildings have complex heating systems that consume too much energy. Wanting to find out for themselves the viability of the HTHV technology, the DOE conducted their own independent study. They discovered that direct-fired HTHV demonstrated 20% gas savings compared to standard unit heaters, a margin that could substantially ...