Lexon are one of the largest independent pharmaceutical wholesalers in the UK. Providing a catalogue of over 8000 products to more than 3000 pharmacies requires large distribution hubs that have to maintain temperature below a set point in order to comply with Medicines and Healthcare Products Regulatory Agency (MHRA) guidelines. Whilst the existing extraction system removed heat from the building, it was now time for an upgrade. A system that would be reliable, economical and able to cope in a heatwave. The brief With a warehouse of over 7000 square metres to cool and such exacting requirements, the choice of contractor and plant was critical. Fortunately the right heating, ventilation and air conditioning contractor were soon identified by Lexon who, after speaking with a satisfied customer in the same industry, and then seeing the product in action, quickly set our engineers to designing a cooling system to meet their brief. An order duly followed and the job was under way. Design and Engineering An important first step is the identification of hot or cold spots. Potential problem areas were considered. For example high storage areas, or the packing, loading and return bays. Also factors that can influence temperature such as doors and windows. The Solution 29 CoolBreeze QAD230 evaporative coolers were the prescription. The units introduce fresh, filtered, cool air into the building, bringing temperatures within MHRA guidelines. The racking at high levels received our particular attention. A continual flow of cool air is pushed along each aisle while carefully balanced ducts provide even distribution. Extra roof vents then expel the hot stale air. During the design, alternative air conditioning technologies were considered. They too could have maintained the temperature in the building. However, they were expensive to install and prohibitively costly to run. For a building this size nothing else comes close to evaporative cooling. As water is the principle means of cooling, no CFC’s are required and so average running costs – for an 8 hour shift – begin at just £1 a day. The results are big energy savings, vastly lower bills and superb carbon credentials. The Result The first result was an early one. The Lexon premises are a busy and complex distribution hub. Clean Air met the challenge and completed the installation with minimal disruption to daily operations. However it was shortly afterwards, during the summer of 2018, that the 29 units established their true worth. Despite sweltering highs in excess of 30 degrees centigrade outside, the temperatures inside remained within MHRA tolerances. As an exemplar in how to cool a pharmaceutical warehouse, Clean Air are justifiably proud of this installation. Lexon too share in our delight. We now maintain and service all of the units we installed and our relationship with Lexon continues to thrive.
by Fixtech 
About the Project Currently ranked 15th in the world for passenger traffic, McCarran International Airport in Las Vegas, NV is about to handle even more passengers with the addition of Terminal 3. The project covers 1.87 million sq. ft. of space including 14 additional gates, an immigration processing center, baggage claim, ticketing, and parking facilities. What’s even more amazing is upon completion, it will allow the airport to serve over 53 million people a year! Situated within a desert landscape, the structure was inspired by the surrounding geography and features long, open spaces where small areas of light accentuate the calming, canyon-like walls. Product Solution In addition to meeting the architectural needs of Desert Plumbing & Heating (DPH) of Las Vegas, Krueger was faced with the issue of a non standard ½” recessed installation. With a commitment to world-class service, Krueger Engineering provided a mock-up to show both Jerry Kechter of LONG Building Environments and the Project Manager, Bill Bird, how the installation plays a part in the DesignFlo’s performance. Based off the sketch (below, left) provided by DPH, our clients were able to experience first-hand the flexibility of DesignFlo by witnessing a successful smoke test (below, right). To perform the smoke test, the units were installed in the Krueger lab to simulate the installation conditions where smoke was injected into the airstream. At a design criteria of ~325 CFM, the DesignFlo displayed excellent throw patterns, at both isothermal and +15ºF delta. The main jet coming from the units had ceiling velocities of 120 FPM at 10’ and 45 FPM at 20’ from the unit. Product Installation Satisfied with the solution and performance of the product, Krueger was faced with a demanding order schedule amounting to OVER 6 MILES of DesignFlo. Over the course of one year Tammy McCabe at LONG Building Environments expertly planned the logistics and release schedule of DesignFlo to Krueger. Tammy ensured all the products were correctly submitted on time to meet the stringent delivery schedule.
by Fixtech 
To support critical current and future business needs by increasing air-conditioning capacity and efficiency, and upgrading electrical service; to obtain an Energy Star rating. Hvac design/build & retrofit solutions To help this client meet its demanding commercial HVAC energy saving objectives, Mesa provided a high-performance HVAC design/build solution on a fast-track schedule. In addition to having maintained the client’s existing plant for many years, Mesa was chosen for this project because, as a HVAC design/build firm, the company offered more and better options than the single-source solutions proposed by two HVAC manufacturers. More efficient cooling system, less space Mesa’s HVAC retrofit solution involved replacing the hotel’s 350-ton industrial chiller plant with a more efficient 600-ton modular unit and performing a major electrical upgrade. In addition to accommodating the mechanical construction project’s fast-track delivery, the modular approach helped maintain the hotel’s historic character, minimized the central chiller plant’s footprint and allowed room for future needs. The central plant was pre-built by the manufacturer, shipped in two sections and assembled on-site. The plant consisted of two centrifugal water-cooled chillers with factory-mounted variable-flow drives, and 2 two-cell stainless steel cooling towers with induced-draft, counterflow design, capable of cooling 2,000 gallons of water per minute. The plant also included chilled and condenser water pumps with variable speed drives, a cooling tower filtration and chemical feed system, a chilled water system expansion tank and air separator, two electric fan coil units for central plant air conditioning and a ventilation fan with gravity back-draft damper. A central plant industrial refrigerant monitoring system, a magnetic flow meter for monitoring the flow of main chilled water distribution and six automated isolation control valves completed the package. Project delivery with no loose ends In managing the project, Mesa made sure it took care of all the details. The company trenched new chilled water lines to an existing tunnel that led to the old chillers. It then installed new chilled water piping to — and within — the plant, as well as supply and return piping for the cooling towers. In addition, the company put in piping for chilled water, fan coil units and water treatment devices, and performed the various piping activities required to connect the chiller plant, the new cooling tower system and other equipment. The firm also installed a water source heat exchanger, which is part of the condenser loop. After completing the underground chilled and condenser water lines for the water source condensers, the company installed grade beams, structural pads and structural steel, so the towers could be set. The modular central chiller plant was then craned into place. Cost-saving DDC system: BACnet In addition, Mesa upgraded the plant’s existing direct digital control (DDC) system to the BACnet protocol, enabling it to better handle the new commercial cooling equipment. This protocol significantly reduced installation costs of labor, conduit and wire. Rather than pulling wire from all components back to the main controller, the company simply pulled the wire to the closest controller, from which BACnet can relay information throughout the system. Hospitality facility background The Mission Inn Hotel & Spa is a National Historic Landmark described by Will Rogers as “the most unique hotel in America.” Begun in 1876 as a boarding house, it now occupies an entire city block. Its multiple wings reflect architectural styles and furnishings ranging from the New World to the Far East. There are 239 guest rooms, including 28 suites, as well as 20,000 square feet of meeting and banquet space, a full-service spa and four restaurants.
by Fixtech 