Battery Room Cooling

BATTERY ROOM COOLING Products

OUTSIDE HUMIDITY

35°C 45°C

90% 40%

22º C

Inside

PROVIDED BY HEINEN & HOPMAN

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Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Heating

Ventilation

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Air Conditioning

Refrigeration

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COMPANY INTRODUCTION Heinen & Hopman is a reliable partner in the global maritime sector, offering top quality products and service in the field of climate control (HVAC & Refrigeration). The no-nonsense and entrepreneurial character of the founders who established the company in 1965 is still one of the main cornerstones of Heinen & Hopman. We support our clients using our knowledge and experience by realising the best possible climate control solutions; either fully customised or with varying degrees of standardisation. Like our clients, we are continuously active on a global scale to ensure that we can always be of service. We are also constantly searching for sustainable innovations as we aim for the best and very latest solutions in collaboration with our clients. Heinen & Hopman is critically aware that a company’s greatest asset is its employees – it is they who represent the added value of our business. Our goal is to continue to expand in the global market for maritime climate control solutions in a future-proof way.

In short, you can rely on Heinen & Hopman to deploy the know-how and expertise required to solve any heating, ventilation, air conditioning and refrigeration issue onboard ships. We see complexity as a challenge, no matter where your vessel may be.

OPERATING GLOBALLY Global networking is crucial in every line of business and the shipping industry is certainly no exception. Being able to offer the highest quality of service and products to our clients at all times and in all places is of enormous importance to us. This is why Heinen & Hopman aims to keep expanding our network and know-how and ensure we are exactly where our clients need us to be.

Europe 26 Offices

1150 Employees

7

Factories

12

Countries

Americas 11 Offices

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240 Employees

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

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Countries

5

Factories

Asia 10 Offices

320 Employees

5

Factories

6

Countries

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

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INTRODUCTION Marine propulsion systems are highly developed. From paddle wheels to steam turbines and from sails to LNG engines. Electric or hybrid propulsion is an interesting option for ships that always sail the same route.

The battery rooms onboard vessels need to be cooled to provide a stable temperature to ensure the battery capacity. It is also important to reduce energy consumption, as the HVAC systems power the installed batteries and are one of the main consumers on the ship. The less energy we use for HVAC systems, the smaller the battery pack can be.

Three types of battery vessels Vessels with battery rooms onboard can be divided in three types: • Vessels that are propulsed by 100% battery-power • Vessels with hybrid propulsion • Vessels that run on battery power under special operation profiles or to use for peak shaving or support the main engine.

Available options To cool down the technical spaces onboard, Heinen & Hopman offers battery room cooling systems. There are two main different types of batteries; air-cooled batteries and water-cooled batteries. Therefore we have four systems to cool the battery room onboard: • Individual (single) cooling system • Battery cooling system for air-cooled batteries • Battery cooling system for water-cooled batteries • Thermal energy management system

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

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SINGLE COOLING SYSTEM For vessels with a battery room onboard that uses battery power for peak shaving or to support the main propulsion system, an individual cooling system can be used. An often used system is a fan coil unit applicable for technical rooms.

BATTERY COOLING SYSTEM FOR AIR-COOLED BATTERIES Air-cooled batteries typically have the air inlet at the bottom of the battery rack and outlet on top backside to support a diagonal air stream through the battery package. Some have their own fan and distribution inside the rack.

Depending on the average water temperatures in which the vessel will sail, a free cooling principle can be considered.

Free cooling means that no compressor power is needed to generate the required energy to cool or heat. When the vessel will sail in the North Sea, free cooling would be a good application. Pre-cooling or 100% cooling without compressor power can be achieved from November to March, giving the components a reasonable size.

In this case, a chilled water unit provides the required cooling energy, which is transported by means of a pump to the fan coil unit in the battery room. The plate heat exchanger (pre)cools the water in exchange with the seawater or internal circuit and reduces energy consumption. With a low system volume, a buffer tank is needed to reduce the switching on and off of the compressor. The chilled water unit and the heat exchanger must be connected to a cooling water circuit to remove the heat, so that the chiller unit can also run as a heat pump. A combination of heating and cooling the room is possible.

Cooling water

Buffer tank Plate heat exchanger free-cooling

Fan coil technical data

Chilled water unit

Cooling water

Circulation pump

Image: principle diagram battery cooling system for air-cooled batteries

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Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

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BATTERY COOLING SYSTEM FOR WATER-COOLED BATTERIES For vessels with a battery room onboard that uses battery power for peak shaving or to support the main propulsion system, an individual cooling system can be used. An often used system is a fan coil unit applicable for technical rooms.

Main components and system temperatures are the same as for the air-cooled batteries. Pre-cooling or 100% cooling without compressor power can be achieved between November and March and the components will have a reasonable size.

A chilled water unit provides the required cooling energy, which is transported by means of a pump to the batteries and the fan coil unit in the battery room. The plate heat exchanger (pre)cools the water in exchange with the seawater or internal circuit and reduces the energy consumption.

Cooling water

Technical room

Battery room Buffer tank

Plate heat exchanger free-cooling Cooling water Battery direct water cooled Chilled water unit

Circulation pump

Image: principle diagram battery cooling system for water-cooled batteries

THERMAL ENERGY MANAGEMENT SYSTEM A thermal energy management system operate as heat pump or as chilled water unit. In cooling mode, the units supply cold water to all cooling consumers and use the heat for hot water consumers or dump overboard.

Heating mode is the exact opposite of cooling and uses the heat from the cooling consumers or draws energy from the sea or other circuits. Heat pump technology is used to lift the temperature to a more useful level. The unit supplies the necessary heating to the accommodation’s water heaters, air conditioning, heating machine space and domestic hot water preheating, using the excess heat from additional refrigeration circuits and battery rooms as a heat source. If this is not sufficient, additional heat is collected from seawater via a seawater box cooler.

The complete system works on the variable water flow consumer circuit and on the constant or variable water flow generator circuit, depending on the mode. To combine these different operations, a hydraulic shunt is placed between these circuits. The system can run in the operating modes such as cooling only, heating only and the most energyefficient free cooling mode.

Cooling Consumers

Heating Consumers

Hydraulic shunt

Sea water cooling

Hydraulic shunt

Sea water heat dumping

Image: principle diagram thermal energy management system

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Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

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Heinen & Hopman encourages a more sustainable world. By providing eco-friendly solutions and services we offer our clients the option of reducing energy consumption and thus CO2 emissions.

you require more information “ Do about our products or do you

“

require advice? I am keen to help you further!

Paul Spoorenberg

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Sales Manager sales@heinenhopman.com

OUTSIDE HUMIDITY

35°C 45°C

90% 40%

22º C

Inside

PROVIDED BY HEINEN & HOPMAN

www.heinenhopman.com 6

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Heating

Ventilation

Battery Room Cooling - HEINEN & HOPMAN 2021 ©

Air Conditioning

Refrigeration

6