ENE · Geothermal
Geothermal power
Baseload renewable generation that does not depend on weather — provided the resource, the cycle and the water chemistry are matched to each other.
Overview
Overview
Geothermal is the renewable that behaves like conventional plant: it runs continuously, it is dispatchable, and it does not need storage to be useful. Glorinda provides reliable solutions using dry steam, flash steam and binary cycle technologies for sustainable energy production.
The engineering decision is driven entirely by the resource. Reservoir temperature, pressure, fluid chemistry and flow determine which cycle is viable, and the fluid chemistry in particular determines what the plant will spend its life fighting — scaling, corrosion and non-condensable gases are the recurring themes.
Detail
Three cycles, three resources
Dry steam
Where the reservoir delivers steam directly, it is routed to the turbine without a separation stage. The simplest configuration and the rarest resource.
Flash steam
High-temperature pressurised water is flashed to steam as pressure drops, and the steam drives the turbine. The most common configuration on high-enthalpy fields.
Binary cycle
Geothermal fluid transfers heat to a secondary working fluid with a lower boiling point, which drives the turbine in a closed loop. This is what makes lower-temperature resources viable, and it keeps the geothermal fluid isolated from the turbine.
Detail
Where geothermal projects run into trouble
Three things, in our experience.
Fluid chemistry. Geothermal brines carry dissolved silica, chlorides and metals. Scaling in the wellbore, the separator and the heat exchangers is a continuous operating problem, and it is the same separation and adsorption science we apply in water treatment.
Non-condensable gases. They degrade condenser vacuum and therefore output. Gas extraction — often by liquid ring vacuum pump, one of whose listed duties is geothermal gas removal — has to be designed in.
Turbine selection. The steam or working-fluid conditions at a geothermal plant are not the conditions a standard industrial turbine is optimised for. Glorinda supplies steam turbines from 50 kW to 180 MW and lists geothermal among their applications.
Applications
Applications and challenges
Where it applies
- High-enthalpy fields with flash steam plants
- Lower-temperature resources with binary cycle plants
- Direct-use geothermal heat for industrial process
- District heating from geothermal sources
- Hybrid geothermal and solar thermal schemes
- Re-rating and modernisation of existing geothermal plants
Common challenges we are asked to solve
- Scaling from dissolved silica and chlorides in the geothermal brine
- Corrosion in wellbore, separator and heat exchangers
- Non-condensable gases degrading condenser vacuum and output
- Turbine selection made against generic rather than geothermal conditions
- Reinjection strategy and reservoir management
- Resource uncertainty before drilling is complete
FAQ
Frequently asked questions
Which geothermal cycle applies to our resource?
Reservoir temperature and pressure decide it. Dry steam where the reservoir delivers steam directly; flash steam for high-temperature pressurised water; binary cycle for lower-temperature resources, using a secondary working fluid. We provide all three.
What is the biggest operating risk?
Fluid chemistry. Silica, chlorides and dissolved metals cause scaling and corrosion throughout the plant. It is a water treatment problem as much as a power one, which is a discipline we are strong in.
Do you supply the turbine?
Yes. Glorinda supplies steam turbines from 50 kW to 180 MW, and geothermal is one of the listed applications for them.
Can geothermal supply process heat rather than power?
Often more efficiently than it supplies power. Direct use avoids the conversion losses entirely, and where an industrial site has a matching heat demand it is usually the better project.
Evidence
Projects
Sample layout. Reference projects are being cleared for publication with the clients concerned. The structure below is final; the content is placeholder.
SampleWater reuse retrofit — sample card
Card layout for a completed water reuse project: stream data before and after, recovery achieved, scope Glorinda held, and the client's own words.
SampleZLD package — sample card
Card layout for a zero liquid discharge package: feed characterisation, evaporator type selected, solid output route, and commissioning duration.
SampleOwner's engineer mandate — sample card
Card layout for an advisory mandate: the client's decision, the options assessed, and what changed in the tender as a result.
Conversion
Take this further
Send us the stream data, the discharge limit or the equipment list you are working from. An engineer reads every enquiry and replies with the questions that actually decide the solution — not a brochure.
Contact
Talk it through with an engineer
Send the constraint you are designing around and we will tell you what is realistic before anyone writes a specification.