MEP ENGINEERING FOR RESTAURANTS: HOW TO CUT UTILITY COSTS BY 30
Every saved on utilities drops straight to your restaurant s bottom line. These hyper-specific mep engineering california moves put 30 back in your bag without sacrificing guest soothe or kitchen public presentation.
KITCHEN EXHAUST AND MAKE-UP AIR: THE 15 OPPORTUNITY
INSTALL VARIABLE-SPEED HOOD CONTROLS ON EVERY EXHAUST FAN
Wire a flow-sensing electrical relay to each hood motor so speed up ramps from 30 to 100 only when cookery load spikes. Set the minimum speed up at 30 to exert velocity; this slashes fan vim 40-60 during idle prep hours.
USE DEM&CONTROLLED KITCHEN VENTILATION(DCKV) WITH CO AND PARTICULATE SENSORS
Mount a CO sensing element at height and a optical maser particulate detector in the duct; tie both to a DCKV restrainer that modulates make-up air dampers and exhaust fans in unison. Test sensors weekly with a handheld meter to keep drift that can cost 1,200 year in wasted reheat.
SEAL MAKE-UP AIR DUCTS WITH UL-181 FOIL TAPE AND INSULATE TO R-8
Wrap all exterior-air ducts in 1.5-inch fiberglass with vapour roadblock, then tape every seam with UL-181 foil tape. A ace 1 4-inch gap on a 12-inch duct can leak 250 CFM, forcing your RTU to run 18 longer.
PREHEAT MAKE-UP AIR WITH A RUN-AROUND COIL SYSTEM
Install a 3-row coil in the beat duct and a matching coil in the outside-air uptake; circulate 30 propene ethylene glycol at 120 F. On a 4,000 CFM system, this recovers 120,000 Btu hr, cutting gas use 3,500 year in a cold mood.
LOCATE MAKE-UP AIR GRILLES 10 FEET FROM EXHAUST STACKS
Position outdoor-air intakes on the reverse side of the roof from tucker outlets and at least 10 feet horizontally apart. This prevents short-circuit-circuiting, which can tighten hood 30 and wedge fans to run at higher speeds.
LIGHTING AND PLUG LOADS: THE 8 SLICE
SWAP ALL KITCHEN TASK LIGHTS TO 90 CRI, 4000 K LED STRIPS WITH OCCUPANCY SENSORS
Use 12-inch, 24 W ft LED strips under shelves and above prep tables; pair with dual-technology sensors set to 5-minute time-out. Instant 75 vitality cut plus better colour version for food metal plating.
INSTALL SMART PLUG STRIPS ON ALL COUNTERTOP EQUIPMENT
Plug java makers, toasters, and POS terminals into plug strips with current-sensing outlets; set get over electric receptacl to cut superpowe to peripherals when stream drops below 0.5 A. Eliminates 400 kWh year of phantom load per post.
USE DAYLIGHT HARVESTING IN DINING AREAS WITH CIRCADIAN-TUNED LEDS
Mount 5,000 K LEDs on dimmable drivers and pair with -mounted photocells; program to dim 1 per 100 lux above 300 lux. Cuts -area light load 60 on sunny days and improves client alertness.
HVAC AND REFRIGERATION: THE 7 BONUS
RIGHT-SIZE HVAC WITH A 24-HOUR LOAD PROFILE AND 10 SAFETY FACTOR
Log space temperatures, kitchen electrical power, and tenancy every 15 transactions for one week; size RTU for the 90th-percentile load, not peak. A 5-ton unit big by 30 cycles 200 more, killing efficiency and humidity verify.
INSTALL EC MOTORS IN ALL WALK-IN COOLERS AND FREEZERS
Replace PSC evaporator-fan motors with 24 VDC EC motors; they draw 60 less great power and run at 70 zip during de-ice, cutting de-ice time 35. Payback is 14 months on a 5-door walk-in.
USE FLOATING-HEAD-PRESSURE CONTROLS ON REFRIGERATION RACKS
Install a discharge-pressure transducer and a PID restrainer to let head forc swim down to 100 psig on mild days. Saves 3 kWh per of close drop below 95 F.
ADD EVAPORATIVE PRE-COOLING TO AIR-COOLED CONDENSERS
Mount a 12-inch media pad and a 1 3 HP pump on the condenser inlet; set pump to run when exterior wet-bulb is below 65 F. Cuts compressor amps 20 and extends life 40.
OPTIMIZE REHEAT WITH A DEDICATED OUTDOOR-AIR SYSTEM(DOAS) AND ENERGY RECOVERY
Install a 100 outside-air unit with a sensible heat wheel; size wheel for 75 effectiveness at 4,000 CFM. Reheat coil load drops 60, delivery 2,800 year in a 5,000 sq ft restaurant.
WATER HEATING AND PLUMBING: THE FINAL 5
INSTALL POINT-OF-USE TANKLESS HEATERS UNDER EACH HAND SINK
Use 199,000 Btu hr, 98 thermal-efficient units with 0.98 EF; set outlet temperature to 110 F. Eliminates 3 4-inch recirculation loops that lose 15,000 Btu hr and cost 400 year to pump.
USE A HEAT-PUMP WATER HEATER FOR THE DISH MACHINE
Install a 120-gallon, 3.5 COP unit in the dish room; preheat entering water with run off heat from the dish machine drain. Cuts dish-machine gas use 70 and qualifies for