trident aquaculture layout brochure

Trident Aquaculture Heaters & Chillers | Division of Toyesi Pty Ltd| April 21, 2016

Unit2, 27 Binney Road, Kings Park NSW 2148 T:02 9679 9400

A.B.N 33 003 133 328 License No, 175503C Please note images within this document reflect potential users and may not reflect actual clients or live projects.

Aquaculture Heaters & Chillers


AUSTRALIA’S INDEPENDENTLY OWNED MANUFACTURER OF HEAT PUMPS – SINCE 1989. PAGE 1

Why use Aquatic heaters & chillers

Aquatic animals respond to water conditions, environmental factors, temperature and seasons. Fish, Shellfish

and Crustaceans rely on these conditions for healthy living and breading.

From hatcheries to aquatic research centers also rely on these environmental factors to produce successful

breeding stock and grow out ponds.

Using heaters and chillers in an aquaculture environment can help either control breading times, prolong

breading cycles and even help boost growth parameters of the livestock.

Types of Aquaculture Heaters & Chillers

There are many types of heaters used in todays’ aquatic heating and chilling process. The types used are often

dictated by size of the tank or operation and also budgetary constraints. They also come in different sizes and

price brackets.

Typical Types:

Gas Heaters

Submersible Titanium Bar heaters

Dedicated chillers

Heat Pumps – Heaters & Chillers

We are not covering all types here as we are focusing on Heat Pumps and how they will benefit you.

What is a Heat Pump?

Heat pump theory rests on the principle that heat will move from a higher temperature to a lower

temperature.

Hence, if a heat transfer coil can be kept at a lower temperature than

its surrounds, it will absorb heat.

For those technically minded, the Toyesi heat pump captures heat from

the surrounding air by drawing it through a lower temperature finned

tube type heat exchanger.

The ambient heat is absorbed by the low temperature refrigerant gas

circulating in the system, where its temperature is increased by a vapour compression process and by

absorbing the motor windings heat of the compressor. The heat of the high temperature refrigerant gas is then

transferred to the circulating pool water via a marine grade tube-in-tube refrigerant-to-water heat exchanger.



Why use a Heat Pump?

A flexible heat pump, such as those developed by Toyesi, uses a significantly small amount of electricity to

obtain large amounts of heating and cooling energy from the environment.

Heat pumps are globally recognized as being very efficient energy movers. From just one unit of electrical

energy, they can produce between 4 to 6 times as much heating or cooling energy, depending on the

surrounding climatic conditions and application.

Not convinced?

Let us know your tariffs and compare costs of operating an air-to-water heat pump to the more traditional

methods of resistive electric (submersible heaters) and/or gas-fired heating. You will be surprised to hear that

you can save up to 75% on your operating costs.

How Do We Select a Heat Pump?

Our first step is to gain an overview of your project requirements. We take in consideration the projects

location, indoors or outdoors, equipment used like UV filters and water pumps that may affect the water

temperature and of course we look at how big your water body is and the desired temperatures of the water

and when.

Our approach in heat pump sizing is to recommend the installation of higher capacity systems where

technically and economically feasible. It should be appreciated that while our software modelling is robust, the

predictive heat load and subsequent predictive performance data must be treated as indicative.

Based on earlier work by the CSIRO and in accordance with AS 3634, variations can occur between predicted

and actual pool, tank or pond heat load demands as a result of numerous factors such as un-seasonal weather,

difference in local micro-climate compared with average weather source data, increased shell heat losses or

ventilation rates for indoor enclosures compared with design, non-adherence to blanket routines, etc.

Increased heating capacity gives greater certainty to predictive outcomes and also provides operational

advantages (such as faster initial heat-up, improved recovery and reduced equipment duty).



Installation Requirements

Toyesi heat pumps can be installed both indoors and outdoors. Its position should consider possible noise

disturbances, airflow and ventilation, and servicing requirements.

Toyesi heat pumps could not be any simpler for a licensed installer. A solid base surface is required to the rest

the heat pump on, supply of electrical mains power through an all-weather safety isolator switch, and finally,

connection of inlet and outlet water tubing to a pump set.

Electrical Supply

Smaller models are usually single-phase connections, whereas larger models are three-phase. Our mid-sized

models are offered with either soft-start single-phase or three-phase. If available, the use of time-of-use supply

tariffs will further reduce operating costs



Aquaculture Projects

In Australia there are many species of seafood that are now grown and produced in farms. Most if

not all of these species start their life in a hatchery. Using Toyesi’s Trident heat pumps during the

breeding and grow out stages can really make the difference. Some species can really benefit from

continued environmental and temperature control right through the farming to customer process.

Some of these species include but not limited to:

BARRAMUNDI -

Broodstock holding tanks

Barramundi are kept in holding tanks and

a Toyesi Trident Aquaculture Heater

Chiller heat pump is used to maintain

around 28oC to 30oC.

To assist the control of breeding

conditions these tanks can be dropped to

cooler temperatures of 23oC to 24oC once

or twice a year.

Thus simulating artificial seasonal changes

to stimulate extra breeding season.

Source: Barra Farming Handbook

TROUT – RAINBOW, SEA, BROWN, ET. AL.

Toyesi’s Trident Aquaculture are ideal for trout farming used mostly as chillers, and it may pay to

get a dedicated chiller due to the low temperature many trout’s require.



OYSTERS

Australia has over 550 oyster growers & farmers mostly concentrated

from lower Queensland down the east coast of New South Wales,

Tasmania and in South Australia.

Australian oyster growers farm three species of oyster in Australia's

coastal waters:

Pacific Oyster (Crassostrea gigas sp.) in SA, Tas and some in

NSW

Sydney Rock Oyster (Saccostrea glomerata sp.) in NSW, QLD and some in WA

Angasi (flat) Oyster (Ostrea angasi) in small volumes across all states.

The Milky Oyster (Sacostrea cucullata) and the Blacklip Oyster (Striostria mytiloides) are

also found in small volumes.

For best growth an oyster needs relatively clear water with a salinity less than 35ppt, pH between

6.75 to 8.75, temperature between 14 - 30oC (Sydney Rock) and 10 to 18oC (Pacific), and low

concentrations of metal compounds.

Source: Oysters Australia

Oyster life cycle (Picture Source: John Norton).

Spawning Oysters can be a tricky process with water temperature

control critical during this process. The Sydney Rock Oyster

commonly is held at 24oC and once acclimatised allowing the water

to increase to 30oC over at least 30 minutes. This temperature

control is ideal for a Toyesi Trident Aquaculture heat pumps.

Source: Dpi Hatchery Manual



Example Layouts

To prevent the Heat Pumps heat exchangers filling up with debris and muck we highly recommend placing

the heat pump after the filter equipment. This will also ensure water leaving the heat pump is less likely to

cool down prior reentering the aquaculture tanks.

Standard Layout

Sample only – Advantage: by

keeping the heat pump separate

then if there is a filter failure

temperature and water flow is not

affected.

Outdoor layout

Sample equipment only. Use as a

layout guide only. – Advantage:

clean filtered water is passed

through the heat exchanger

reducing change of clogging.

Indoor Layout

Does not include image of filters. Use as

layout guide only. Advantage: the heat pump

is not exposed to the environment prolonging

life expectancy.



Alternative Indoor Layout

For an alternative indoor application. Used to help reduce

humidity or assist to control room airflow or temperature.

PCVER – System

Passive Cooling, Ventilation,

Dehumidification & Energy

Recovery System.

Does not include image of

hatchery equipment.

Use as layout guide only

Special Oyster Farmer System

One of the major issues in breeding oysters is that spat are suspended in the water and without

careful filtration (e.g. 200µm to 670 µm screens) or through poor water care the spat can move into

and around any water flow system linked to the hatchery.

Oyster Spat and suspended mucus can then accumulate within the heat exchangers of connected

heat pumps. Over time this will reduce the efficiency of the heat pump, as the spat continue to

accumulate and potentially grow within the equipment. Kind of like arteries filling with plaque.

There are then the conditions ideal for the increased risk of bacteria and other diseases to

contaminate the water and oysters alike. Care must be taken to clean the heat exchangers either

chemically of manually at least once a breeding cycle to remove any unwanted accumulated

masses.

CLEANABLE HEAT EXCHANGERS

Most heat pump heat exchangers are chemically cleanable their layout and design does not allow

for a more manual method of cleaning. Although requiring slightly more investment Toyesi has

designed a range of Trident Aquaculture systems that are designed with cleanable heat exchangers

in mind for the Oyster and other shellfish client in mind.

For more information, please do not hesitate to ask.



Introducing Toyesi’s Trident Range of Aquaculture Heater Chillers

Due to this growing trend with pool based heat pumps entering the aquaculture market we have made the decision to brand our aquaculture heat pumps and chillers to help our clients know we have dedicated range of Aquaculture heater chillers that have been custom designed just for their unique project needs. Please enjoy our Trident range of Aquaculture Heater Chillers.

Heat Exchangers – why we differ Our refrigerant-to-water heat exchangers are made of full lengths all metal Copper Nickel 90/10 seamless tubing or Titanium tube and tube type heat exchanger fully welded or braised that been produced for many years that are specifically made for refrigeration, air conditioning and marine industry applications with known and predictable life time for fresh, chlorinated water or marine salt water conditions. They have easy to silver-braze connections for refrigerant and water connections.

We do not use the pool heat exchanger industry standard of having titanium in plastic shells. Although

plastic shell heat exchangers considerably reduce the cost of manufacture of a heat pump, we have found

that are prone to premature failure due to excessive pressures, temperatures, heat stress elongation,

distortion and the melting of plastic fittings as well as suffering from water turbulent vibration stress crack

fracturing causing leaks and failure. For more information, ask us to send you the “Tacit Truth about Heat

Exchangers” pdf.



Advanced Technical Features

Independent Temperature Control - Heating

or Cooling

Heat and cool operational modes.

Multi-stage and/or capacity units.

Proportional water valve operation.

Programmable digital clock timer.

Placement outdoor or in-plant (room).

Indoor models can be built to provide:

o Ventilation and waste air recovery.

o Dehumidification and cooling

(passive)

o Auto-ventilate enclosures or plant

rooms

Visible Alarm Fault Display with Safety

Lockout

Defrost Mode Management of Compressors

and Fans

Post-Defrost Forced Fan Residual Moisture

Removal

On/Off Standby Mode via Digital Input Signal

Compressor Thermal Overload Protection

Heat Exchange Anti-Freeze Safety Protection

Dual Set Point Changeover Thermostat

Advanced Anti-Frost Refrigerant Management

Remote controller compatibility.

When it comes to aquaculture heating or chilling, you can trust Toyesi has the ideal system to suit your

application. Innovative and versatile, the Trident Series extensive range of aquaculture heat pumps offer

superior flexibility of being configured quickly, making it the perfect solution to a variety of diverse domestic,

commercial and industrial applications.

Easy to install and simple to maintain, you’ll find the Trident Series a pleasure to work with. Regardless of the

site’s landscaping or site design, Toyesi has over 40 different model capacities from 6kW to 300kW and up in

both outdoor and in-plant models; with either side or vertical fan discharge configurations available, and a

choice of titanium heat exchange technologies.

This system offers many features found in Toyesi’s renowned high-end systems, including variable fan speed

noise control, advanced refrigerant management technology and sophisticated state of the art digital logic

controller option aimed at delivering enhanced operating efficiencies that maintain capacity during critical

periods. They are uniquely designed in a slimline and compact chassis suitable for limited plant space

requirements.

Be assured that installation, commissioning and maintenance issues are fully supported by our technical sales

engineers, making Australia’s Trident aquaculture heater – chiller heat pumps the right solution for every kind

of project.

For more information or an obligation free quotation:

Toyesi Pty Ltd - Tel: (02) 9679 9400 Fax: (02) 9679 9402

Email: [email protected] Web: www.toyesi.com.au

http://www.toyesi.com.au/

trident aquaculture layout brochure

Documents