Lennart Vamling

Technoeconomic assessment of hydrothermal liquefaction oil from lignin with catalytic upgrading for renewable fuel and chemical production

Modified surfaces to enhance vertical falling film heat transfer – an experimental and numerical study

On the measuring of film thickness profiles and local heat transfer coefficients in falling films

Evaluation of alternative routes for production of bio-oil from forest residues and kraft lignin

Strategies for Controlling Sodium Salt Scaling in Black Liquor Evaporator: The Influence of the Bulk Crystal Population

Experimental and numerical study of heat transfer in a large-scale vertical falling film pilot unit

Hydrothermal Liquefaction of Kraft Lignin in Subcritical Water: Influence of Phenol as Capping Agent

2018

Hydrothermal liquefaction of kraft lignin in sub-critical water: the influence of the sodium and potassium fraction

Hydrodynamics of vertical falling films in a large-scale pilot unit - a combined experimental and numerical study

The Effect of Bulk Crystals on Sodium Salt Scaling in Black Liquor Evaporators

2017

Thermal stability of low and high Mw fractions of bio-oil derived from lignin conversion in subcritical water

Accelerated aging of bio-oil from lignin conversion in subcritical water

Effect of Co-flowing Vapor during Vertical Falling-film Evaporation

2016

Storage Stability of Bio-oils Derived from the Catalytic Conversion of Softwood Kraft Lignin in Subcritical Water

Separation and recirculation of bulk crystals to potentially mitigate sodium salt scaling in black liquor evaporators

Using 2D NMR to characterize the structure of the low and high molecular weight fractions of bio-oil obtained from LignoBoost (TM) kraft lignin depolymerized in subcritical water

Heat transfer for falling film evaporation of industrially relevant fluids up to very high Prandtl numbers

Effect of pH on Kraft Lignin Depolymerisation in Subcritical Water

Subcritical water de-polymerization of Kraft lignin: A process for future biorefineries. Structural characterization of bio-oil and solids

Qualitative investigation of the flow behaviour during falling film evaporation of a dairy product

New measurement approaches for film thickness and wall temperature in falling film heat exchangers

Cleaning of Water-Soluble Scales in Black Liquor Evaporators – A Modeling Approach

2014

Kraft Lignin Depolymerization in Near-Critical Water: Effect of Changing Co-Solvent

Black Liquor Falling Film Evaporation: Computational Model and Pilot Experiments

Modeling and evaluation of evaporator cleaning

2014

Experimental Study of the Heat Transfer in a Falling Film Evaporator: Influence of the Co-Flowing Vapor

2014

Catalytic depolymerisation and conversion of Kraft lignin into liquid products using near-critical water

Solid Dissolution into a Vertical Falling Film under Industrial-like Conditions

2014

The effect of temperature on the catalytic conversion of Kraft lignin using near-critical water

Modelling and Evaluation of Evaporator Cleaning

2013

Heat transfer for falling film evaporation of black liquor up to very high Prandtl numbers

Catalytic Depolymerisation and Conversion of Kraft Lignin to Liquid Products Using Near-Critical Water

Crystallization fouling of sodium salts in black liquor falling film evaporators – development of experimental method and first results

Method and Apparatus for Controlling Incrustations in Multi Stage Evaporation Train for Black Liquor

Developing a 1.2 kW air-to-air single room heat pump unit for heating, ventilation and air conditioning - Acronym: Heat Pump - Deliverable 1, WP1: Scientific concept development (D1.1 Report on prototype heat pump cycle, D1.2 Report on Heat Pump system specific heat transfer properties, D1.3 Report on investigation on combined fan and motor package)

Evaporation of Na2CO3-Na2SO4 solutions: A method to evaluate the distribution between bulk and surface crystallization

Sodium Salt Scaling in Black Liquor Evaporators - Pilot Plant Results and Industrial Significance

Crystallization in a pilot evaporator - Comparison between black liquor and black liquor model substances

Sodium Salt Scaling in Black Liquor Evaporators – Pilot Plant Results and Industrial Significance

Crystallization in a Pilot Evaporator: Aqueous Solutions of Na2CO3 and Na2SO4

Heat transfer in evaporating black liquor falling film

Falling film hydrodynamics of black liquor under evaporative conditions

Non-evaporating black liquor falling film hydrodynamics

Scale formation and growth when evaporating black liquor with high carbonate to sulphate ratio

Black liquor falling film hydrodynamics – Part A: Nonevaporative conditions

Indirect methods to determine apparent position in a falling film heat transfer measurement apparatus

Turbulence models for falling film hydrodynamics and heat transfer compared with experimental values for black liquor

An implementation-oriented heat transfer model for black liquor evaporation

Future use of heat pumps in Swedish district heating systems: Short- and long-term impact of policy instruments and planned investments

Fouling Layer Growth in Black Liquor Falling Film Evaporation

Heat pumps and tradable emission permits: On the carbon dioxide emissions of technologies that cross a tradable emission market boundary

Falling film evaporation of black liquor - comparison with general heat transfer correlations

On the Future Role of Heat Pumps in Swedish District Heating Systems - Competition with Waste Incineration and Combined Heat and Power Under Greenhouse Gas Emission Restrictions

Surprising effects of combined vapour and liquid mass transfer resistances when condensing a mixture outside tube banks

Evaporation of R407C and R410A in a horizontal herringbone microfin tube: heat transfer and pressure drop

Flow fields in shell-and-tube condensers: comparison of a pure refrigerant and a binary mixture

A new test facility for black liquor evaporation

Prediction method for flow boiling heat transfer in a herringbone microfin tube

Evaporation of R134a in a horizontal herringbone microfin tube: heat transfer and pressure drop

Reasons for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. Part 2: investigation of mass transfer resistance effects

Reason for drop in shell-and-tube condenser performance when replacing R22 with zeotropic mixtures. Part 1. Analysis of experimental findings

Energy Conservation in the Food Industry Using Process Integration - Methodologies and Case Study

Systems study of absorption and compression chillers in a combined district cooling and district heating system

Diffusion effects on multicomponent condensation - influence of glide on mass transfer resistance

Heat Transfer and Pressure Drop in a Plate-Type Evaporator

Wall temperature measurement in a herringbone microfin evaporation tube

Energy conservation in the food industry using process integration - Methodologies and case study

Experimental and Theoretical Investigation of Heat Transfer and Pressure Drop in a Plate-Type Evaporator

Condensation of mixtures in shell-and-tube condensers – the influence of important factors on calculation results

Drop-in replacement of R22 in heat pumps used for district heating – influence of equipment and property limitations

2001

Why and how can mathematics improve the learning in chemistry and chemical engineering?

Heat Transfer of R22 and Alternatives in a Plate Type Evaporator

Development of Models for Prediction of Solubility of HFC Working Fluids in Pentaerythritol Esters Compressor Oils

Replacement of R22 in Heat Pumps Used for District Heating

Solubility of HFCs in Pentaerythritol Tetraalkyl Esters

Comparison of Heat Transfer for R22 and some Alternatives in a 25 MW Shell-and-Tube Condenser

Viscosity for Mixtures of HFCs and Pentaerythritol Esters

Ersättning av R22 i fjärrvärmesystem. Är HFC-blandningar bättre än R134a?" (in Swedish)

Mixtures To Replace R22 in High-Temperature Heat Pumps

A New Correlation for Viscosity of Oil/Refreigerant Mixtures

Solubility of HFC32, HFC125, HFC134a, HFC143a and HFC152a in a Pentaerythritol Tetrapentanoat Ester

Boiling Heat Transfer in an Evaporator Tube with a Star Shaped Insert

Changes in optimal distribution of heat exchanger area between the evaporator and suction gas heat exchanger when replacing r22 with r407c

Försämrad värmeöverföring i tubpannekondensor vid ersättning av R22 med R407C – kan den förklaras och kan den åtgärdas?

Ersättning av R22 i fjärrvärmesystem. Är HFC-blandningar bättre än HFC134a?

Changes in optimal design of a dry-expansion evaporation when replacing r22 with r407c

Viskositet och löslighet av R407C och R410A i en skruvkompressorolja

Heat transfer coefficient reduction when replacing R22 with R407C in a tube-and-shell type condenser

The solubility of HFC125, HFC134a, HFC143a and HFC152a in n-EICOSANE, n-HEXADECANE, n-TRIDECANE and 2,6,10,14-TETRAMETHYLPENTADECANE

Hur påverkas förångardesignen då blandningar med glide används?

Rapport over institutionen för värmeteknik och maskinläras verksamhet inom värmepumps-/kylteknikområdet under 1997

Prediction of Solubility for HFC working fluids in Model Subtances for compressor oils

Replacement of R22 in tube-and-shell condensers: experiments and simulations

The solubility of HCF22, CFC114 and HFC152a in n-HEXADECANE

The solubility of HCF Working Fluids in Model Substances for Compressor Oils: Predictive Methods and Measurements

Termofysikaliska egenskaper för arbetsmedia i kylmaskiner och värmepumpar

Impact of uncertainties on estimations of heat pump cycle performance

Heat transfer and pressure drop measurements for hydrocarbons in a direct-expansion evaporator tube

Data och konsekvenser för dimensionering och design

Egenskaper hos blandningar av arbetsmedium och kompressoroljor

Flow boiling heat transfer and pleasure drop for zeotropic mixtures in a horizontal tube

Flow boiling heat transfer and pressure drop for HFC134a in a horizontal tube.

Flow boiling heat transfer and pressure drop for zeotropic mixtures in a horizontal tube

Some aspects of using mixtures

Calculation methods for comparing the performance of pure and mixed working fluids in heat pump applications

Alternative kolemidler 1:3 globala miljöaspekter på arbetsmedier i kyl- och värmepumpanläggningar

Factors of importance in cycle performance estimations

The need for, and availability of, working fluid property data: Results from Annexes XIII and XVIII

A modified lee-kesler equation of state for refrigerants

The Abdoul-Rauzy-Peneloux Group Contribution Equation of State Extended to CFC-Containing Mixtures

Thermal Conductivity of Gaseous Mixtures in Foams - An Evaluation of Existing Calculation Methods

CFC alternatives for high temperature heat pump applications - Chapter 7

Nonazeotropic Mixtures as Substitutes for today´s CFC Fluids

Energy aspects in CFC-developments

CFC Alternatives for High-Temperature Heat Pump Application

Possible new working fluids in high-temperature heat pumps

Alternativa medier och processer

Alternativa arbetsmedia - en översikt

Blandningar som arbetsmedier

Periodic operation of a tubular reactor: a simulation of consecutive reactions in a chromatographic reactor

On the use of periodic operation for improvning chemical processes