Industrial Chillers 15 – 25KW

Thermex chillers are designed supply chilled water to heat developing processes. The unit are manufactured in Australia to suit local condition and give our customer the solutions they need

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Category: COMMERCIAL CHILLERS

Thermex chillers are designed supply chilled water to heat developing processes. The unit are manufactured in Australia to suit local condition and give our customer the solutions they need

Thy can be installed indoors or outdoors and can be configured to supply chilled water for

Potable water applications
Process cooling from an internal buffer tank
Process cooling to an external buffer tank

Features

The chillers are supplied with – as standard

An internal 80L buffer tank to protect the compressor from excessive start, close temperature tolerance, reduces thermal spikes and allows for vented design with no need for hydronics kit
Suitable for indoor or outdoor installation
Rugged galvanized steel construction
Components sourced from the industry’s leading suppliers
R134a refrigerant for high ambient temperature operation and the lowest GWP of all contemporary refrigerants
Integrated circulation pump
Comprehensive 12 months warranty on all parts and labour
Highly accurate electronic controller
316SS plate heat exchanger evaporator
Comprehensive factory testing before dispatch
Evaporator protection on all models

450kw 1

Chiller Application

Industrial process chillers are designed to circulate water to a heat producing process via a water pump. The water brings the heat back to the chiller where the compression cycle cools the water before it is returned to the heat process.

application

Technical Data

Model		TC15	TC18	TC20	TC25		TC27
System type	Chiller	Heat rejection		Air
Capacity ASHRAE COND	TR
	Btu/hr
	kW	15.1	17.0	19.8	22.5	24.6
	EER (kW/TR)
Capacity control	%	0-100%
Refrigerant	Type	R134a
Total power input	kW	6.25	6.85	7.75	9.37	9.37
Total running current	Amps	17.5	18.7	19.3	17.8	19.9
Power requirements	V/Hz/Ph	380-415/50/3
COMPRESSOR	Scroll Hermetic	Start method		DOL
Motor size	HP	8.0	9.0	10.0	12.0	13.0
RPM	1/min	2900
QTY		1
Maximum Power input	kW	4.7	5.3	6.2	7.6	7.6
Total running current	Amps/ph.	10.4	11.6	12.2	13.6	15.7
MCC/ comp	Amps	17.0	22.0	28.0	24.5	35.0
Rated load current / comp	Amps	10.9	14.1	17.9	–	22.4
Locked rotor amps	Amps	101	111	118	125	140
Oil charge / comp	L	0.7	0.7	1.0	1.2	1.5
Oil type	POE
CONDENSER	Air cooled – heavy duty – high ambient design
Material	Aluminum, blue fin on copper tube
Tube diameter	Inch	7mm
Fin spacing	mm	7mm
CONDENSER FANS	External, axial fans, 4 pole – speed controlled
Fan speed	Rpm	900
Fan diameter	mm	450
No fans		2
Total power input	kW	0.7			0.92/ phase
Total running current	Amps	3.1			2.3/ phase
Total air flow	M3/ hr	7800
EVAPORATOR	Plate heat exchanger
No. refrigeration circuits		1
Chilled water flow rate	l/s	0.8	0.9	1.0	1.1	1.2
Pressure drop	kPa	50
Inlet / outlet CHW Temperature	C	12/07
Working temp range	C	05/20
Water connections	mm	1” FBSP
Evaporator protection		Flow switch
Expansion		TX valve
CONTROLLER	Standard electronic – Dixell
HP Safety	2850kPa	LP Safety		375kPA
Shipping weight – dry	Kg	215	225	232	245	260
Buffer Tank	Litres	175
BMS protocols	–	Buffer tank construction		Stainless steel

Dimension

TC15 to TC27 Unit

TC15 to TC27 Closed Loop Unit

TC15 to TC27 Split System

Evaporator unit

Chiller nomenclature

Pump data

Pump model	Current draw – 1 phase	Current draw – 3 Ph	Motor rating – kW
P4	4.0	2.3	0.85
P5
P6
Weight
RPM	2900
Approvals	CE, WRAS, ACS, TR, EAC
Housing	Cast iron
Impeller	Stainless steel 316

Pump Curves

Process chillers are typically not for potable water applications although the chiller can be designed to supply potable water.

All Thermex chillers up to 50kW are supplied with a buffer tank – the buffer tank is an important feature in all chillers and the bigger the better. The buffer tank in a process chiller has many benefits such as

helping protect the compressor from excessive starts
preventing thermal spikes impacting on the compressor
allows closer temperature tolerance to the process
having stored chilled water to allow a managed shut down of a process should there be a problem with the cooling cycle
allows for a vented design and prevent the need for a hydronics kit

Options

Close tolerance (CT)	The chiller can be manufactured with either a hot gas bypass valve or a VFD on the compressor for close temperature tolerance. Standard tolerance achievable is ±0.5C depending on load conditions The valve acts as to unload the refrigeration effect to the evaporator as the chilled water temperature approached set point. If the compressor is fitted with a VFD this will slow the compressor down as water temperature approaches set point and speed it up as it approached set point plus hysteresis. The software has a PID loop to ensure maximum efficiency and maintain temperature control.
BMS Connectivity	The chiller can be connected to the high or low level BMS Low level connectivity will be dry contact for – Master run – Master fault High level connectivity is Modbus, SNMP and Bacnet over Ethernet without the need for a gate way
Tandem/ N+1 (T)	The chiller can be wired if they are to be installed in a N+1 arrangement so the lead chiller manages the duty cycling of the chillers and controls the chillers if a fault should develop in one of the chillers
Potable water supply (I)	The chiller can be manufactured to deliver water for potable water application. A typical installation requires the chiller to be connected to the main water and the pressure from the main is used to supply the process. The chiller will have a heat exchanger installed which will cool the mains water to the supply temperature in a single pass If the process does not require water the chillers operation is unaffected This method of construction also allows the chiller to be used to cool water temperatures above 20C
Remote Condensers (R)	The chiller can be manufactured as a split system. The evaporator can be installed indoors in a plant room for example and the condenser installed outdoors. Typically, the maximum distance between the 2 halves of the chiller is 20 meters – for longer runs contact Thermex’s engineering staff
High corrosive environments	If the chiller is to be installed in an environment with corrosive elements present the chiller can be manufactured in such a way to extend the life of the unit These environments can be – Coastal which high levels of salt spray present – Mining with Sulphur present The coils on the units can be coated to extend their life – the coil will lose efficiency if the bond between the copper and the aluminum starts to break down The units can be constructed with stainless steel cabinets The electrical enclosures are weather proof but if an enclosure is required with a high IP rating this can be offered In the case where flammable gas is present an Ex or ATEX rated unit maybe required
Soft starters	In installations where the power supply is not robust soft starters can be supplied on the compressors to limit the in-rush current on compressor start up.
Redundant pumps	The units can be supplied with 2 pumps that duty cycle to share the wear and tear. The software can also start the pump sitting in redundancy if the duty pump develops a fault
Pump UPS (U)	The electrical box can be supplied with a separate set of terminals to allow an uninterruptable power supply to be wired so the pump will run continuously – this allows the chiller to keep pumping cold water to the process in the event the 3 phase supply develops and issue and allows the process to shut down in a managed way
Castors	The chiller can be supplied on wheels for ease of re-location
High Ambient	For installations such as mine sites, especially in remote areas where the temperatures are extreme the chiller can be constructed to be able to handle these extreme temperatures
Compressor VSD	Variable speed drives – fitted to the compressor to allow turn down in partial load conditions which adds to the operating efficiency of the chiller

All operational cooling capacity, power consumption and current draw data shown above is based on the chiller operating at the limit of its design and is intended to be an indication only.

Each chiller will be individually designed to customer requirements and a detailed product specification will be supplied at time of order including installation instructions and dimensions. The power consumed by the unit and the current it will draw vary depending on how the chiller is constructed. The chillers performance may also vary slightly from the figures above again based on customer requirements.

THERMEX Solutions product range is subject to change without notice

WARRANTY

THERMEX Solutions warrants all it products for 12 months from the agreed commissioning date – no later than 30 days from invoicing date.
The warranty is to the first purchases of the unit
The warranty covers all parts and labour to rectify the unit
The warranty is subject to THERMEX Solutions terms and conditions which will be provided at the time of order
Warranty is subject to Thermex Solutions full terms and conditions

About Thermex Solution

Thermex Solutions is Australia’s largest manufacturer of small capacity specialsied industrial water chillers. The technical team at Thermex have a combined 50 years in the Australian chiller industry – no other company can offer this level of engineering support for our customers critical applications.

Rather than offer imported chillers Thermex has dedicated itself to providing locally specified and manufactured chillers which are supplied with components sourced from the industry’s leading suppliers. With specifying chillers experience counts and no other company has the experience to offer the advice and solutions the market requires.

As the Australian market grows and diversifies, Thermex can offer expert advice on chillers, heat pumps, variable speed high efficiency scroll chillers, air handling and more.

Thermex is back by a nationwide team of service technicians who are trained in the operation and maintenance of Thermex chillers

Industrial Chillers 15 – 25KW