| ||June 22, 2011 |
| Keeping It Simple With Data-Center Cooling |
By BUDDY PHILLIPS, Atlas Sales & Rentals Inc.
|Most engineers are well-aware of the "K.I.S.S." principle. This somewhat tongue-in-cheek saying, which stands for, "keep it simple, stupid," states that most mechanical systems will work best if kept simple, rather than complex. It applies nicely to the cooling of data centers and server rooms. [MORE] |
| Learning to 'Walk the Talk' |
By SCOTT ARNOLD, Executive Editor, firstname.lastname@example.org
|In 2004, HPAC Engineering launched the Engineering Green Buildings Conference in its hometown of Cleveland. Among those in attendance was Steve Melink, PE, founder, owner, and president of Melink Corp. [MORE] |
| Department of Energy Recognizes new Global Energy-Efficiency Standard |
|A new standard intended to help organizations worldwide save money in commercial and industrial facilities has been recognized by the U.S. Department of Energy (DOE). [MORE] |
| 2011 ASHRAE Handbook Tackles Tall Buildings |
|The newly published 2011 edition of ASHRAE Handbook—HVAC Applications has a chapter focusing on the unique design issues tall buildings present. [MORE] |
| Emerson Network Power Presenting Free Data-Center Webinar June 23 |
|Seven best practices for increasing data-center efficiency and lowering power-usage effectiveness while meeting critical availability and scalability demands will be shared in a free Webinar presented by Emerson Network Power June 23 at 4 p.m. ET. [MORE] |
| A/E/P, Environmental Firms Bucking Open-Book-Management Trend |
|Heralded by industry leaders and management experts as an important management trend, open-book management—the sharing of summary financial data with all members of a staff—is not being practiced by a majority of architecture, engineering, and planning (A/E/P) and environmental firms, a recent survey reveals. [MORE] |
| Fire-sprinkler seismic bracing products |
Anvil has launched a new line of fire-sprinkler bracing systems to meet the seismic requirements of any project specification. The complete line of products includes structural attachments, pipe attachments, pipe restraints, and accessories—everything a designer needs for lateral, longitudinal, and/or four-way bracing. [MORE]
| Outdoor insulation system |
ArmaTuff provides thermal insulation and ultraviolet protection for exterior ducts, tanks, vessels, and large pipes. Aluminum and polyester cladding laminated to Armaflex elastomeric insulation enables one-step installation by eliminating the need for jacketing and painting. ArmaTuff provides heavy-duty protection and zero permeability for year-round weather protection. [MORE]
| Insulated saddles and clevis hanger covers |
New CoolDry insulated saddles and matching Wraparoos clevis hanger covers provide water- and moisture-resistant insulation and jacketing. The chlorofluorocarbon- and hydrochlorofluorocarbon-free phenolic-foam insulation has excellent compressive strength (3.75 PCF and 5 PCF) and meets rigid 25/50 flame/smoke ratings, while the vapor-barrier jacketing with self-sealing tape is zero-permeance-rated. A unique partial-bottom ribbed saddle secures the CoolDry system, while the bright-white polyvinyl-chloride Wraparoos clevis hanger cover protects the saddle and cleans easily with a damp cloth. [MORE]
| Firetube boiler |
CBEX from Cleaver-Brooks is a completely integrated boiler, burner, control, and heat-recovery system. Every core component was designed and built to work together, resulting in the most efficient and lowest-emission firetube system ever built. Features include minimum excess air across the operating range, the ability to meet 5-ppm nitrogen-oxide-emissions requirements and 1-ppm carbon-monoxide-emissions requirements, and a footprint 15-percent smaller than that of traditional designs. [MORE]
| Portable combustion analyzer |
ECOM EN2 is a compact portable combustion analyzer with features of larger, more expensive units. Housed in a rugged aluminum frame and hard-side case, EN2 monitors up to four gases (oxygen, carbon monoxide, nitrogen oxide, nitrogen dioxide), probes for temperature and stack draft/pressure, and calculates carbon dioxide, efficiency, and excess air. A strong internal pump and peltier gas cooler with automatic condensate drain ensures proper sample conditioning, leading to greater accuracy and longer sensor life. An on-board printer, secure-digital memory card, and wireless Bluetooth are standard features. Common applications include setup, maintenance, and emission monitoring of natural-gas, diesel, and oil-fired boilers, burners, and reciprocating engines. [MORE]
—ECOM America Ltd.
| Power-vented economizer |
The IPVB-ECO inline power economizer is a mechanical-draft fan equipped with a flue-gas economizer. It can be used in conjunction with any type of gas-fired boiler or water heater. Recovered heat can be used for boiler feedwater, makeup water, hot-water return, hot-water storage, process water, potable water, and more. IPVB-ECO is installed in a chimney flue system, where it can be exposed to hot flue gases and still ensure a mechanical draft (negative pressure). For optimal performance, fan speed can be controlled by modulating pressure control. [MORE]
| Light-commercial heat-recovery ventilators |
Air Conditioning, Heating, and Refrigeration Institute-certified light-commercial heat-recovery ventilators from Fantech are powered by energy-efficient ebm-papst motors to provide 250 to 1,105 cfm at 0.4 in. wg. Reversible door panels provide easy access to cores, filters, motors, and drain pans. Aluminum heat-exchanger cores are engineered to maximize heat transfer while allowing an effective evacuation of condensate. Plates are hemmed and sealed to prevent cross-contamination. An electronic control board allows easy connection to existing HVAC equipment. [MORE]
| Energy-recovery ventilators with digital scrolls |
Greenheck has introduced digital scroll compressors to its Model ERCH and Model VER energy-recovery ventilators to improve temperature and humidity control and save energy. Featuring an integral controller with a time-averaging sequence, the scrolls are engaged and disengaged at a rate matching the required cooling capacity. Using digital scrolls for capacity control provides leaving-air temperatures as precise as 1°F. Additionally, digital scrolls offer cooling-capacity turndown from 10 to 100 percent. The compressor turndown results in longer cycle times, improving humidity control, reducing compressor wear, and eliminating the need for hot-gas bypass to improve the overall efficiency of a system. [MORE]
| Scotch marine boilers |
Hurst 400 Series three-pass wetback scotch marine (firetube) boilers are well-suited for all commercial and industrial applications. The boilers provide fuel efficiencies exceeding those of most four-pass designs. Having no large refractory rear door, the boilers allow one technician easy access to all tubes. The boilers' front doors can be opened without the need to remove burner components and controls. Capacities range from 15 to 2,000 hp and 670 to 3,348 MBtuh. They are available for 15-psi steam and 30-psi water (60-psi water optional). [MORE]
—Hurst Boiler & Welding Co. Inc.
| Condensing boiler |
Available in five models ranging from 1.5 million to 3.5 million Btuh, with thermal efficiencies as high as 99 percent, the fully modulating CREST condensing boiler with SMART TOUCH operating control features a low-nitrogen-oxide combustion system with stainless-steel heat exchanger and unique dual-system burner with up to 25:1 turndown. The top-mounted micrometal-fiber burner serves as two combustion systems, each with its own blower and gas-valve assembly to power the combustion process based on demand. The wave pattern of CREST's large stainless-steel firetubes provides superior heat transfer, creating turbulence to "scrub" maximum heat energy from flue-gas products before they leave the heat exchanger. [MORE]
| Flow-straightening connector |
Immediately reduce turbulence and straighten flow from the discharge side of a pump in a fraction of the space. The Vane Flex pump connector combines hydrodynamically shaped vanes with a flexible connector to quickly condition the flow exiting a pump, protecting piping components and keeping the system in balance. Additionally, Vane Flex helps to isolate pump vibration to protect an engineered piping system. A white paper and technical video are available at www.metraflex.com/vaneflex.
—The Metraflex Co.
| Dedicated outdoor-air system |
Mitsubishi Electric Cooling & Heating's CITY MULTI VRF Dedicated Outdoor Air System (DOAS), 2011 AHR Expo Product of the Year for Innovation, is designed to supply outdoor ventilation air to a building independent of an air-distribution or conditioning system. The DOAS pre-conditions outside air for introduction into downstream HVAC units, lessening the load on HVAC systems. Because systems have to work less to condition air to a certain temperature, end users can save on utility costs. With line lengths of up to 541 ft one way, the application range of the DOAS is unprecedented. [MORE]
—Mitsubishi Electric Cooling & Heating
| Ceiling-mounted air conditioner |
Designed to protect servers and other heat-sensitive equipment, the compact, self-contained CM25 ceiling-mounted air conditioner provides 25,000 Btuh of cooling. Its high sensible-cooling capacity and SEER of 14 are made possible by an energy-saving, variable-speed inverter compressor and inverter fan motors. Additional green features include R-410A refrigerant and Restriction of Hazardous Substances compliance. A wall-mounted controller offering advanced communications, monitoring, and self-diagnosis capabilities comes standard. At just 20 in. in height, the CM25 fits in tight spaces. A built-in mounting bracket, flanges, and vibration isolators allow easy installation above a drop ceiling using standard, off-the-shelf hardware. [MORE]
| Water filters |
Orival water filters protect heat exchangers and prevent clogging of nozzles, tubes, and other narrow passages by removing dirt particles down to micron size, of any specific gravity, from once-through and recirculating cooling water systems. Line-pressure-powered, the filters clean themselves without external power and do not interrupt system flow. They install easily in any position. They are available from 10 to 12,000 gpm. [MORE]
| Condensing vertical boiler/water heater |
Available in 1,000-, 1,500-, and 2,000-MBtu sizes, the XTherm vertical modulating condensing boiler/water heater combines Raypak's modulating high-recovery copper-fin technology with control/combustion advancements. Category IV-certified for polyvinyl-chloride (PVC), chlorinated-polyvinyl-chloride, and stainless-steel venting, XTherm has a factory-installed PVC vent adaptor. Extreme burner turndown produces up to 99-percent efficiency at low fire and 96-percent thermal efficiency at high fire. A microprocessor-controlled diagnostic center displays information in plain English. XTherm units and Raypak's MVB non-condensing boilers can be combined in multiple-boiler systems, utilizing Raypak's Mod Plus Hybrid control to achieve greatly reduced first cost while maintaining maximum system efficiency. A small footprint saves space for cramped retrofit projects. Integral cold-water start/run is standard. [MORE]
| Variable-refrigerant-flow system |
Samsung DVM Plus III enhances comfort while reducing energy consumption in commercial applications, utilizing variable-refrigerant-flow technology to allow more than 40 indoor units to be connected to up to three outdoor units ganged together. Multiple capacities and styles of indoor units are available to suit room size and load, as well as room usage. Outdoor units are powered by the Copeland Scroll Digital compressor. A wide range of controlling options, ranging from the simple to full building-management system, is available. [MORE]
—Samsung DVM - System AC
| Obround grease duct |
SlimVent obround grease duct is UL 2221, Tests of Fire Resistive Grease Duct Enclosure Assemblies-classified for zero clearance to combustibles, carrying a 2-hr fire rating. It features 4 in. of ceramic-fiber insulation and is available with a 304 or 316 stainless-steel inner liner and a 304 or 316 stainless-steel or aluminized outer shell. Sections are joined by a ½-in. flange-to-flange "V"-band connection, creating a leak-free joint with no field welding required. [MORE]
—Schebler Chimney Systems
| Industrial control and automation products |
Yaskawa America Inc.'s Drives & Motion Division delivers industrial control and automation products to markets in the Americas. Its drives and servo systems are applicable to a wide variety of automation tasks in a wide variety of industries. The purpose usually is to control speed, torque, position, or other process variable. Yaskawa is the world's largest manufacturer of alternating-current drives and motion-control products, including adjustable-frequency drives, servo amplifiers, servomotors, machine controllers, and motion controllers. [MORE]
—Yaskawa America Inc.—Drives & Motion Division
| NEW! Cost-efficient HVAC Transmitters from Vaisala |
Vaisala introduces 3 new transmitters for HVAC applications. The Vaisala HUMICAP® Humidity and Temperature Transmitter HMW80 is stable and dependable for use in heating and ventilation systems. The Vaisala CARBOCAP® Carbon Dioxide and Temperature Transmitter GMW116 is highly stable with unmatched long term stability. The Vaisala HUMICAP® Humidity and Temperature Transmitters HMT120 and HMT130 is ideal for more demanding HVAC or cleanroom applications with interchangeable probe for easy field calibration. Click here for more info.
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