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Buildings are not created to use energy, but to provide healthy and productive indoor environments. However, efforts to save energy may cause a reduction in health and productivity by degrading [...]

For a healthy and productive indoor environment to be achieved, a mechanism is required to verify (1) the amount of outdoor-air (OA) ventilation being delivered to building occupants and (2) [...]

Minimizing exposure to airborne particulate matter is one aspect of a healthy and productive indoor environment. The effectiveness of the particulate control achieved in a space--and the resulting exposure to [...]

After much ado, ASHRAE Standard 62, Ventilation for Acceptable Indoor Air Quality, was updated in 1989 with a minimum outdoor air requirement of 20 cfm/person for office spaces as necessary [...]

HVAC CONTRACTORS CAN DEAL WITH IAQ PROBLEMS Inadequate indoor air quality can lead not only to various comfort-related complaints of too hot, too cold, headaches, itching eyes, and fatique, but [...]

The article focuses on a letter from a member of the HPAC Editorial Advisory Board, criticizing the CDC's ventilation recommendations for buildings, as they neglect the importance of air movement geometry, and emphasizes the need for better ventilation strategies.

In terms of sustainability and ventilation ("Sustainable Ventilation in High-Rise Office Buildings," August 2009), I recommend accurate diagnostic monitoring of both carbon-dioxide concentration and dew-point temperature be performed with frequent [...]

Ventilation is of utmost importance in a building. Not only is it crucial to achieving a healthy and productive indoor environment, the amount of energy it consumes can be considerable. [...]

Optimizing the performance of a ventilation system maximizes its ability to provide the building's occupants with the intended amount of ventilation while using the least amount of energy necessary. Operators [...]

Even though the definition of existing-building commissioning (EBCx) is given as 'a systematic process for investigating, analyzing, and optimizing the performance of building systems through the identification ... of ... [...]

The article discusses ventilation and moisture as two aspects of building operations that directly impact worker health and productivity. Topics covered include one cause of under ventilation in locations such as conference rooms, ways to improve ventilation effectiveness and lessen the possibility of virus sharing among occupants and the benefits of conducting accurate indoor and outdoor carbon dioxide measurements.

The article presents assessments showing how the ventilation of a commercial building can provide a healthy environment. It concludes that the point regarding measuring parameters to improve indoor-air quality (IAQ) while minimizing the associated energy use boils down to maximizing the quality of the data monitoring of ventilation and moisture management performance. It is required to test and measure IAQ parameters.

The article compares carbon dioxide (CO&sub2;)-based method with cubic-feet-per-minute- (cfm-) based method in monitoring ventilation. The two methods may be used in order to provide healthy and productive indoor environment under ANSI/AHRAE Standard 62, Ventilation for Acceptable Indoor Air Quality. According to the author, the CO&sub2;-based method is dynamic while the cfm-based method is static.

Focuses on the ventilation component of achieving and maintaining good indoor air quality (IAQ). One of the most major problems in maintaining good IAO; Approaches involved in determining outside air (OA) delivery; Timely feedback mechanism needed to measure OA delivery; Achievement of adequate pressurization of occupied spaces; Diagnostic information; Ventilation distribution adequacy and the evaluation of its duration. INSET: Do you agree or disagree with author?..

Discusses strategies in using demand-controlled ventilation (DCV) to maximize a building's indoor air quality. Concept of DCV; Advantages of DCV application where ventilation is based on actual occupancy; Disadvantages of outdoor dampers guesswork; Specific examples of the level of detail available by DCV; Duration of system operation; Establishment of baseline performance.

The article focuses on the failures in the improvement of ventilation performance which include the use of local thermostats and set up of air-movement geometry based on mixed-air concept.

Explains the importance of the operation of a ventilation system to a building's energy management. Necessity of the conditioning of outdoor air for ventilation; Intent of the Leadership in Energy and Environmental Design for New Construction Indoor Environmental Quality Credit 2, Increased Ventilation; Results of a tracer test conducted on the enthalpy heat wheels used at an elementary school.

Opinion. Presents an alternative method for monitoring indoor air quality (IAQ). Drawbacks of power-line carrier platform for data transmission; Description of the AIRxpert Systems Inc.; IAQ parameters that need to be monitored.

Several letters to the editor are presented in response to articles in the previous issue including "Rethinking Central Utility Plants," by Carl C. Schultz in the August and September 2009 issue, "Multi Parameter Demand-Controlled Ventilation," in the August 2009 issue, and "Regenerative Dual Duct: A Case Study," in the January 2009 issue.