Case studies

Removal of Formaldehyde from a Dissection Lab without Added Energy Consumption

The dissection room at Gendron Hall however, had a problem controlling the amount of formaldehyde vapour that was emitting into the lab space. This vapour along with some other organics were exfiltrating into other parts of the building, causing discomfort for the occupants of the adjacent offices.

The Gendron Hall Building, located on the university's campus, housed a dissection room that measured to exceed the TWA as set by the ACGIH for formaldehyde. The main activities in the biology lab were dissection of specimens for learning purposes in undergraduate studies.

University of Ottawa, Dissection Room 117, Gendron Hall

Retrofit to Intensive Care Unit Filtration System
Air Purification - USAH System

Gas-Phase Filtration - Indoor Air Quality
for a healthy and comfortable working environment

Reno, Nevada —Originally built in 1862 in Reno, Nevada, the Washoe Medical Center is a 885,000 sq. ft. facility that is continuously expanding and upgrading.  This hospital is the major trauma center for Northern Callifornia and Nevada, therefore it has the busiest heliport in North America.

Washoe Medical Center, Reno, Nevada

Indoor Air Filtration within Classrooms
Designed to Meet ASHRAE Standard 62

Air Purification & Energy Conservation

Miami, Florida — Demographic changes in the Miami, Florida area forced the Dade County School Board to constuct new primary learning centers in order to accommodate the influx of new students.

Primary Learning Center, Dade County School Board

Gas-Phase Filtration for Libraries and Museums

Surveyor Plus™ Electronic Air Quality Monitoring System

College Station, Texas—Environmental forces play an important role in establishing the preservation characteristics of artifacts in a conservatory.  Museums, and library curators, have known for many years that a deficient environmental control strategy within a museum will result in severe damage or degradation of the materials on display or in long/short term storage.

George Bush Library & Museum, College Station, Texas

Retrofit to Main Coroner's Office

When a building houses as diverse a range of activities from decomposed body storage rooms to secretarial offices, you can expect to have a wide range of contaminants that must be eliminated at the source for the health and comfort of the occupants.

Located in downtown Toronto, the building houses the main coroner's office for the Ministry of Solicitor General of Ontario. This twenty year old building houses forensic pathology labs consisting of autopsy rooms, body storage rooms, various labs, parivate offices as well as general offices.

Forensic Pathology Laboratory, Toronto

New Headquarters for Bombardier Aerospace Group-North America and Canadair

When 1800 employess are working in one large building, you can expect to have a wide range of contaminants produced from various areas such as the printing department, the art studio, the kitchen, the cafeteria and other departments.

Located at Montreal International Airport (Dorval), the building consolidates Canadair aerospace activities previously scattered in six older facilities, reuniting all corporate, program and administrative personnel.

Canadair Administration Building, Montreal

Circul-Aire's Filtration Technology Keeps Harrah's Casino Lounge Smoke Free

Major cities across the U.S. have banned cigarette smoking from bars and restaurants. To this effect, the owners of the restaurants concerned, have been forced to try to accommodate the smoking portion of their clientele.

Harrah's Casino Lounge has successfully achieved superior air quality without comprising its clientele or the law. The Summit View Lounge is located on the 16th floor of the hotel overlooking Lake Tahoe which offers fine wine and cigar bar.

Harrah's Casino, Summit View Lounge, Lake Tahoe, NV

Electronic Process Control Room Air Purification for a Single Line Bleached Kraft Pulp Mill

The mechanical design consisted of both pressurization and recirculation systems. The pressurization system design not only took into consideration the effect of the contaminant gas hydrogen sulfide (H₂S) but also considered gas vapor pressure diffusion and the effect of wind pressure against the protected space.

Built in 1994/1995 in Kerinci, North Sumatra, Indonesia, Riau Andalan Pulp & Paper is one of the most technically advanced bleached pulp mill facilities worldwide. The facility stands on approximately three square kilometers producing a bleached pulp product for worldwide distribution.

Riau Andalan Pulp & Paper, Indonesia

New Entry Pavilion, Community Center & Giant IMAX Theatre of the Kansas City Zoo

When a 400-seat IMAX theatre, community center, offices and a foyer with tropical plants incorporating large glass windows are located at the entrance of a city zoo, in an area with some of the most extreme summer and winter design conditions, the engineer is faced with some very difficult tasks.

The Deramus Educational Pavilion of the overhauled Kansas City Zoo opened in December of 1995. This 75,000 sq.ft. pavilion is actually two inter-connected buildings.

Kansas City Zoo, Missouri

Resort Becomes First Canadian Indoor Pool to Apply
Gas-Phase Air Purification for IAQ

Guests breathe a new 'freshness' in natatorium after HVAC dehumidifier retrofit that also brings a green energy-saving strategy.

  Alliston, ON―En route to replacing an aging dehumidifier for its natatorium, the Nottawasaga Inn Resort discovered that recent dehumidification technology advancements offered solutions to challenging eye and lung irritation nuisance of every indoor pool ― chloramines.

Dectron Chloraguard - Nottawasaga Inn Resort, ON

FSU’s Strozier Library Archival Room Features
State-of-the-Art Air Purification

Engineer’s design includes tough Florida dehumidification,
gas-phase air purification, heating, cooling, and winter humidification
from a single packaged unit

Tallahassee, Fla. – Florida State University’s renown Seminole Indian artifact and rare book collections are now accessible to students in one environmentally controlled room thanks to a $827,000 renovation and a consulting engineer’s state-of-the-art HVAC design.

FSU Strozier Library, FL

Sewage Odor Control System for Pumping Station

A two-fold requirement providing neighbors with an odorless environment, and providing pumping station operators with ventilation to keep the inside hydrogen sulphide steady state concentrations below toxic levels when the wells are serviced for maintenance.

In Hong Kong, land comes at a premium.  Placing sewage pumping stations in the city or at the outer regions becomes a major engineering task, as very expensive housing complexes or commercial buildings share the same property line as sewage pumping stations.

Sam Shing Sewage Pumping Station, Hong Kong

Resort's Four-Season Pool and Spa Paradise in Canadian Mountains Features State-of-the-Art HVAC System

IAQ, energy efficiency and moisture removal are combined for
indoor mountain fantasy.

Mont Tremblant, Quebec—Half of the swimming experience in the new 30,500-square-foot aqua club at the four-season resort in Mont Tremblant, Quebec, is a breathtaking view of the Laurentian mountain range.

However, without a state-of-the-art HVAC system for Tremblant’s newly-built, $4 million AquaClub La Source—owned by IntraWest Corp.,Vancouver, B.C.—the vast 150 linear feet of windows revealing this picturesque scene would be covered with a blurry surface of condensation.

Mont Tremblant Pool

Rehabilitation of a Waste Water Treatment Aeration System

Air Filtration - Custom Air Handling Unit

Bridgeport, CT.—Exhaustive demands presently imposed on municipal waste water systems in most cities in North America, primarily due to increased population density, has forced a substantial amount of municipalities to review their existing infrastructures.

The city of Bridgeport, Connecticut is one such municipality that required a substantial refurbishment of the West Side Waste Water Treatment Plant. The Water Pollution Control Authority of Bridgeport mandated the Kasper Group, Inc. and Hazen and Sawyer (P.C.) to design and implement the modifications to their West Side Plant.

Westside Waste Water Treatment Plant

Decontamination and Degassing Process
to Remove Mercury Vapour

Air Purification designed to meet space limitations and maximize
efficiency of the source capture ventilation system

Vancouver Island, B.C. —Most of the electrical requirements for Vancouver Island, B.C. are supplied from the mainland via submarine cables installed and operated by British Columbia Hydro.

British Columbia Hydro - High Voltage DC Link

The Reno/Tahoe International Airport, NV
Air Purification System - TMP Series

Circul-Aire's Energy Recovery and Air Purification,
a designer indoor air® Solution

Reno and Tahoe, Nevada are prime vacation locations because of their scenic mountains and gambling attractions. The increase in tourism, however, has placed a greater load on the regional Reno/Tahoe Airport that serves the surrounding area. But despite the quaintness of
this mountain resort area, the airport’s location in a valley-like surrounding has attributed to many problems with air quality because fumes from planes and ground-support equipment are slow to dissipate.

Like all public buildings, the Reno/Tahoe Airport Authority is required to supply proper outside air ventilation as outlined in the ASHRAE 62-1999 ventilation standard. Unfortunately, airport applications present a unique and immediate concern because airport structures routinely contend with many internal and external contaminants associated with both jet and ground access vehicle emissions.

Case Study The Reno-Tahoe International Airport