We present a Success Story on an automation system installed at the Hilton San Diego Bayfront, located in San Diego, United States. by Distech Controls
The Hilton San Diego Bayfront, a 30-story building facing San Diego Bay, opened in 2008 as the newest skyscraper hotel in California, United States. The building, with a spectacular terrace overlooking the bay and its interiors illuminated with external light is an example of the best post-modern architecture and cutting-edge engineering technologies. The hotel, located just minutes from the airport and adjacent to the San Diego Convention Center, has 1,190 rooms, 30 luxury suites and 165,000 square feet of meeting space. It is undoubtedly one of the hotels with the most comfortable atmosphere on the West Coast, due in part to the innovative heating, ventilation and air conditioning (HVAC) and building automation system (BAS). From the initial phase, the designer made energy efficiency a priority along with guest comfort. In addition, the hotel had to be built with long-term sustainability in mind with technologies that can be easily and cost-effectively modernized according to needs. List priorities
Since it was decided that the Hilton San Diego Bayfront was going to be a green building project, the building automation system would have to meet very strict and specific criteria. Distech Controls' Dynalectric San Diego system integrator supplied a full range of BAS services, including Distech Controls products based on the designer's priorities. Distech Controls was selected based on the following:
- An open system: the best of the industry standards that uses LONWORKS® technology.
- Continuous source of system components: the manufacturer's original hardware and software should always be available, and subsequent versions should be compatible.
- Easy integration and future improvements: the BAS should allow additional components to be perfectly integrated. In addition, the system should facilitate future technological improvements. The challenge: designing an optimal BAS
The hotel's central mechanical system is ultra modern and very efficient. It has a chilled water system (CHW) composed of three 850-ton chillers, three CHW pumps and three secondary CHW pumps. Distech Controls' EC-Net solution uses BTU measurement to ensure chillers can meet the building's cooling demand. This keeps the energy consumption at the lowest possible level. The water condenser (CW) system has cooling towers in a constant volume loop with three CW pumps. There are two steam boilers dedicated to laundry operations. Primary and secondary hot water (HWS) systems consist of two boilers, two primary HWS pumps, two secondary HWS pumps and two heat exchangers. The EC-Net solution uses BTU measurement for the HWS system. So that the guest can benefit from maximum comfort, the heat exchanger insulates the heating on the different floors of the rooms. In addition, the temperature in the pool and spa area is regulated by two heat exchangers and control valves in the primary and secondary loops. The mechanical system of the hotel's operations area has a number of components including variable air volume boxes, plus 54 fan coil units and two constant volume AUUs and four groups of air conditioning units. There are 24 variable air volume control units that supply mixed air with CHW cooling and HWS heating. To reduce the amount of energy consumed by the building, the AUUs were adjusted in order to control static pressure ventilation with economizer, control of ventilation demand and reset discharge temperature according to the average zone temperature.
The energy consumption of meeting spaces and ballrooms and occupant comfort were optimized through controlled demand ventilation using CO2 monitoring and control. In each of the 52 electrical equipment rooms there is a fan coil unit that controls the temperature through a constant volume of ventilation and hot water coil. The main telephone and data room has four AC heat pump units for critical load applications aimed at meeting the demanding demands of temperature regulation. The solution: an integrated control system
Distech Controls supplied a range of products for the hotel project starting with 322 Lonworks® configurable terminal controllers and 35 programmable controllers, to customize the programming of the air handling unit and central plant, the control as well as the control of ventilation demand and energy efficiency sequences. For the control of the exterior lighting, EC-Light, Lonworks' lighting solution, was used. The mechanical and electrical equipment connected to the Lonworks controllers was integrated through EC-Net, Web-based network service and graphical user interface from Distech Controls. Benefits for the client
Thanks to Dynalectric's engineering expertise and time-saving features of Distech Controls products, the designer saved 20% on installation and commissioning costs. Building operators were able to quickly access all aspects of the system from a Web browser, allowing them to quickly respond to all system needs. The easy-to-use user interface of the EC-Net system significantly improves the daily performance of the system. Today, the Hilton San Diego Bayfront hotel operates with the highest level of energy efficiency. Over time, the hotel has been able to easily expand or improve part of its building automation system as needed. By clearly establishing the operating rules of the system, the customer was able to obtain a true building automation system that meets their current and future needs. To highlight
Project data
- Project for a new construction
- Opened in 2008
- High-rise hotel with 1,190 rooms and more than 165,000 square feet of meeting space.
- An example of the best building automation systems Products from Distech Controls:
- Lonmark certified programmable and configurable controllers
- Lonkworks lighting solution
- Ec-NetAX web-based building automation system for multiple protocols Total number of controllers: 385 Total number of checkpoints: 2,854 To highlight
Integrator's Words
"Dynalectric won the project using Distech Controls products. We chose Distech Controls because of its reputation for reliability, product ease of use and ongoing commitment to R&D." "Distech Controls' programming aids were very easy to use and significantly reduced our installation and commissioning time." Matt Hylton, BAS division manager at Dynalectric.
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